C6 And C7 Corvette Testimonials For Jim’s MRC Calibration Upgrades

The first testimonials are highlights from the C6 owners, followed by their entire testimonials,

Hundreds of C6’s have been upgraded and we are fortunate to continue to be at 100% satisfaction.

Following the C6 reviews are C7 testimonials.  Thousands of C7 customers have upgraded their cars with Jim’s calibrations.


  • Boy, it is like driving a different car and what a fantastic improvement in the driving experience.
  • Both tour and sport glide over bumps, the body motions are much more balanced. Steering is more responsive. It’s still a Corvette but no more dash rattling over the bumps.
  • I now love my 2009 ZR1 even more. The MRC upgrade is simply awesome. 
  • I cannot overstate what a difference the upgrade did with my ZR1. I am beyond amazed with the improvement it made.
  • All around more comfortable and highly manageable when driving aggressively.
  • Within a couple of miles on very familiar roads, I knew that the New Tour setting brought a much higher level of composure and suppleness over bad pavement without any sort of marshmallow feel.
  • For a Corvette owner, this upgrade is like a blessing from the Pope or a guitar lesson from Hendrix.
  • Bumps in the road are now absorbed much, much better. Ride and handling is so much better.
  • The best upgrade I have done to this car.
  • Tour mode is fantastic, it rides like a new car. Super Sport is fantastic as well. Perfect cornering but great over the bumps.
  • I will be recommending this upgrade to all our clients with MRC
  • I noticed an immediate and impressive improvement in the way the car rode and handled over rough surfaces using the new calibrations.
  • Already we sense a wonderful difference! The Vette drives better than ever!
  • What an amazing difference. I noticed it as soon as I got out on SR-22
  • Honestly, if you’ve thought about this mod, go ahead and do it. For $325, I promise it’ll be the cheapest mod you make with the greatest results.
  • I can’t say enough about how dramatic the improvement in the ride quality of the car is.
  • The MRC upgrade is wonderful. The more I drive the GS the more I enjoy the feel of the ‘new’ car.
  • I have intentionally kept my car completely stock . . .so doing this reprogram was my first and only modification. I have absolutely no regrets . . . the suspension is clearly improved.
  • My ZR1 rides and behaves so much better. By far the best money I have ever spent on this car!!!
  • America I am convinced that this is one of the best changes that I have made to my 2011 C6 GS.

T. Hopen, Lawrenceville, GA – 2013 Grand Sport

I just had the Jim Mero Magnetic Ride Controller Upgrade (Jim Mero Vehicle Dynamics LLC) installed on my 2013 Grand Sport Corvette. Boy, it is like driving a different car and what a fantastic improvement in the driving experience! What was surprising is the modest cost of the upgrade controller and the modest cost to have a local garage (Mahdavi Motorsports, Lawrenceville, GA) install it. A number of options are available for the upgrade but since I don’t tack my car I got the Tour/Sport upgrade. In Tour mode my car rides so much smother and the car is really enjoyable to drive. But the biggest improvement in the Sport mode. I seem to have a lot more control of the car when going around curves and the steering seems a lot more firm. You really feel the road but it does not beat you up when you hit a rough spot. I can’t say enough how delighted I got the upgrade to my car! I urge anyone with a C6 with the MRC option to check out their website at https://jimmero.com/ and get it installed on their car. I don’t think you will regret it.  T. Hopen, Lawrenceville, GA

Bob G – 2009 ZR1

I now love my 2009 ZR1 even more.  The MRC upgrade is simply awesome.  The steering has more feel and firmness just when needed, perfect.  The suspension is really a noticeable improvement.  More forgiving over the rough stuff yet the car settles in faster.  All around more comfortable and highly manageable when driving aggressively.  Way fewer “fall out clunks” going across overpasses and road bumps.  Thank you so much for the upgrade, love it!

Arnold – 2012 Centennial ZR1 – Upgraded at Charlotte

Jim, I had you do the upgrade to my 2012 Centennial ZR1 at the Rick Hendrick Corvette show in Charlotte. The ride back to Greenville, SC was remarkable. The car rode so much smoother. Before the upgrade you would cringe going over road construction areas. I am very happy with the upgrade.

Dr_gallup, 2013 Grand Sport -Upgraded at Charlotte

I had the upgrade programmed this weekend, Jim put in the New Tour / New Sport calibration at Rick Hendricks Motorsports. I took I 85S to Gastonia, north on NC 321 & west on I 40 and must say the ride over expansion strips was much smoother in New Tour. The tires still make a big wallop noise of course but you don’t feel the sharp slap. But no wallowing or floating, a noticeable improvement. Then I picked up NC221/226 before turning off on 226a (Diamondback) which is just a wonderful piece of pavement. Very tight and twisty and the pavement is in excellent condition. Switched to sport mode and it handled great. At little Switzerland I got on the Blue Ridge Parkway and took it south to NC 80 (The Devil’s Whip). This road is much rougher and here the new sport calibration really shined. The car was much more composed over broken up patches of pavement. Very pleased with the change, well worth it. I drive a lot of these mountain 2 lanes, tons of fun

Kevin H – 2012 Grand Sport

Just met with Jim Mero tonight as he was passing through. He upgraded our 2012 Grand Sport Convertible with the New Tour / New Super Sport. The ride down was a bit choppy in factory Tour mode. The ride back home was much nicer. Up the hill on my street in Sport mode was another new experience. Update:  took the GS Convertible out this evening. Up Rte 60 through Hawks Nest. Tried both the New Tour and Super Sport modes. Even in Super Sport the bumps and divots in the road are not as harsh. Much more compliant than before. I will be taking it to the SWVR SCCAs last autox of the year next weekend providing the weather is good. Can’t wait! So far, I am very happy with this upgrade. My wife told me she thought it was less harsh and abrupt over the bumps too. I like it. Great upgrade. Thank you Jim,

Greg S – 2009 Base Coupe w/MRC

“This is the highest value C6 modification out there for a couple of key reasons.  Most important, it does (more than) what it promises at an amazing price.  It’s a no-risk, superior return for the upgrade dollar.  There is no research or wrenching needed to get a major suspension upgrade that benefits from C7 lessons learned.  A quick download transforms C6 handling without the expense, complexity, and hassle of changing to coilovers or some other custom suspension setup that needs to be dialed-in or massaged.  None of the mechanical suspension alternatives can easily adapt to the range of driving missions and pavement types from streets to highway to racecourse that the MRC upgrade can.  This software mod is a brain transplant that unlocks the MR hardware to perform noticeably better.


After the install, you immediately know something has changed for the better.  Within a couple of miles on very familiar roads, I knew that the New Tour setting brought a much higher level of composure and suppleness over bad pavement without any sort of marshmallow feel.  The car just feels smarter and more focused; it tracks better, with less hop and scratchiness over bumps, ruts, and potholes, and fewer creaks and groans at parking lot speeds.  City streets are less annoying, and the ride is more quiet.  There’s a new level of calmness in the ride, but the car is no less alive, sharp-edged, or planted when I need to change direction or launch onto the highway or into holes in traffic.  New Tour simultaneously makes the C6 a better weekend fun ride and a better daily driver.  It’s surprising not to find a compromise for, or downside to this magnitude of change.


I have not fully explored the New Super Sport calibration yet, but based on a few drives at fast highway speeds, it feels more appropriate than the original Sport setting.  It’s more buttoned-down than New Tour without feeling harsh or jittery.  I worried a bit about whether to opt for New Sport or New Super Sport.  (I wanted a clear separation between modes, but would New Super Sport be too aggressive or punishing?)  All signs point to New Super Sport as the perfect choice for serious roadwork when I want maximum stability and grip, as well as enhanced body and wheel control for aggressive running.  It’s definitely not too brutal for use on “normal” roads when I want to tighten things up.  Looking forward to taking a long drive on a twisty road.  Tail of the Dragon, anyone?


Getting back to why this mod is such a high value, it means a lot that you’re dealing directly with a Corvette titan who’s been there, done that, and set the ‘Ring records.  Your car benefits from all the wisdom and mileage hat Jim Mero possesses.  He’s the philosopher of Corvette suspension tuning. For a Corvette owner, it’s like a blessing from the Pope or a guitar lesson from Hendrix.” 

Fred Rice – Klassic Rides LLC – 2013 427 Convertible

I’ve made a point of driving my Corvette almost daily since you installed the MRC upgrade, and it truly is a very different and much improved car vs the stock programming & ride.  I’ve spent time driving the car on city streets, neighborhood streets, and interstate highways & I’ve used both “Touring” & “Sport” settings in all environments.


You were right:  I now leave the MRC set on “Sport” virtually as a default setting, vs using the “Touring” setting as the default setting and the “Sport” setting as optional.  While both modes are much improved, the improvement in the “Sport” setting is most dramatic.


The car now handles much better. 


  1. No “darting” on highways.  As you probably know, with the wide tires on this car, “darting” was a problem.
  2. No “dancing” sideways over small depressions.  This was a problem with depressed manhole covers, resulting in the car “dancing” to one side in curves.
  3. Bumps in the road are now absorbed much, much better.  Ride and handling is so much better.
  4. Road noise is much reduced. 


I’ve also noticed that the clutch engages much smoother than before, and putting the car in motion is so much easier than before. 


Overall, the car feels tighter, more solid, and more under control.  If I didn’t know that you had upgraded the MRC programming, I would have thought that someone had installed a major suspension modification.  It truly does drive like a new car!


Thank you for making this great upgrade available.  It really is a modification that all C6 drivers should install in their cars!


On a related note, we here at Klassic Rides would very much like to be able to provide installation of your MRC upgrade to Corvette drivers in and around the Charlotte area.  We’ve been in business for over 15 years, and our customer base extends from Virginia to Florida along the Atlantic Coast, and west into Kentucky and Tennessee.  I would very much like to discuss how this could be a benefit to both you and us. 

Dan L – 2013 427 Convertible

Jim, thanks for meeting me last Tuesday morning. The upgrade made a big difference in my 427. I took a favorite back road on my way home from Richmond, most of it in Sport mode, and the difference is fantastic. The old sport mode was too harsh for normal roads, but now it rides great and I feel more control. Steering feel is great. The best upgrade I have done to this car. Thanks again.

Mike C – 2012 Grand Sport

Just had my C6 GS done by Jim, it’s only a week but it’s like having a new car. Touring mode is now the way it should be. The car rides over bumps and those expansion joints in the road very smoothly and sport mode is very responsive. Thanks again for all your help. Mike.

Greg P – Base Corvette with MRC – Upgraded at the Caravan

During the NCM Caravan, and after driving my 2009 Convertible for 1,500 miles, I was fortunate to have Jim upgrade my C6’s MRC.  What a difference it has made – the ride back home was much more enjoyable.  I drive my Vette all the time spring through fall so I have a firm understanding of it’s handling and how it handles the bumpy roads.  Specifically, I cross certain unavoidable cracks in the street that jarred the car if I didn’t slow to a crawl.  No longer.  I still slow out of habit, and certainly notice the cracks, but the vehicle takes them like my new SUV instead of a sports car.  The other day I finally had the opportunity to take the Vette through some windy Colorado mountain roads and test out the Sport Mode of the MRC.  What a blast it was accelerating through the turns – the handling was noticeably improved.  I love my C6 but before the MRC upgrade I was considering upgrading to a C7 just because of the comfort of the ride.  I’ve shelved that idea for a couple more years now, maybe indefinitely until a C8 convertible is in my future.  Thanks Jim!!!

Bob M – 2013 Grand Sport

Out here in Sonoma County, California we have some of the worst kept roads in the state, maybe the whole country. Even in town main roads cry out for an SUV. My 2013 GS just about required a month piece to prevent chipped teeth. I have used Jim’s New Tour/New Sport for a week now over the worst roads both in town and out. The “jarring” initial hit is gone. It doesn’t hop sideways over the rough payment in tight corners under acceleration when driven hard anymore. The difference between tour and sport is quite noticeable. I can’t imagine staying with the stock programming and missing out on enjoying the car as it was meant to be.

Greg B – 2012 Grand Sport – Upgrades at the NCM Caravan

WOW! What a difference!  My wife has some medical issues and is very sensitive to vibrations, pressure changes, etc.  She RELLY noticed a difference in the removal of the “harshness” that your code offers.  We went over the course of 5280 miles on our 19 day 20 State tour.  Your Code for Shook Recalibration is Terrific.  It really makes a difference. Thanks again Jim!  The ride home (about 3000mi) was wonderful.

Namala W – ZR1

I took the car out to get some pictures, just drove it around in tour mode. I was so shocked by the improvement in ride quality I ended up taking it for a long drive. I took the car over a route I know that is very bumpy with both rolling bumps and short harsh bumps. I really couldn’t believe how well the car completely eliminated the smaller bumps and was so composed over the longer bigger bumps. On larger bumps I’ve always felt the rear of a C6 would pop up and “hang” a brief moment longer than the front of the car. Your calibration removes that sensation entirely. Both Steve and I like to go on long road trips south to Nevada and California, typically 8-10 hours a day behind the wheel. I thought to myself that this was the perfect calibration for a trip like that as the car was so comfortable, I actually felt I would prefer to do a long trip in this car over a CTS-V2 or CTS-V3. I will be recommending this upgrade to all our clients with MRC

Ed H – ZR1 – Upgraded at the NCM Caravan

Thank you for doing the upgrade to my ZR1. I noticed an immediate and impressive improvement in the way the car rode and handled over rough surfaces using the new calibrations.  During my 5000 Km ride back to Edmonton, Alberta, over many types of roads I found the car was no longer jarring and shaking the car to bits at every imperfection as it was doing prior to the upgrade.  Changes in road height, such as at the joints at highway interchanges and railway tracks, are much more pleasant to traverse. I found myself enjoying the ride rather than hanging on for dear life. These C6s can actually ride like a car, not a wagon! This would be for a great upgrade to the new owner should I ever decide to sell the car. However, with the new settings I may just hang on to it for a while longer!

Ken W – 427 conv. Programmed at the NCM Caravan

One of the happiest and coolest places on Earth! National Corvette Museum 25th Anniversary! Had a great time talking with Jim and Terri Mero after Jim did his magic re-flash of our much loved 427’s magnetic ride suspension. Already we sense a wonderful difference! The Vette drives better than ever! Tomorrow on track we will learn more! THANKS Jim & Terri!

How cool to have THE GM Driving Engineer who has set so many lap records and been the man behind so many Corvette suspension tuning technical successes to get personally involved with OUR Corvette!

John S – 2012 Grand Sport

What an amazing difference. I noticed it as soon as I got out on 22 leaving the dealership. Even more on 270 heading home with as rough as it is in some places. I had the upgrade done in our 2017 Grand Sport. I could tell the difference but not even close to the difference it has made on the 2012. I honestly think if I was blind folded now, I would have a hard time telling which car I was in.  A huge thanks for making this available. Thanks for accepting my Facebook request so I can follow along. Best of luck to you and please let me know if I can provide anything else. Conti is going to hook me up with one of your signed posters since I forgot to have you sign the car. Talk to you soon. Thanks, John

Mike P – 2011 ZR1 – Upgraded at Carlisle

Hello all.!! Wanted to give a shout out and a BIG “Thanks.!!” to Jim and his wife Terri.!! Ran into them at Carlisle this weekend and did Jim’s MRC upgrade on my ZR1. Man, what a difference it made with the car, a buddy of mine had it done on his as well and had the same opinion.!! I honestly felt the difference leaving their tent, going back to where we parked.

Then on the way back to the hotel, highway speeds, the car just absorbed the road beautifully.!! This is with hard, stock, 9 year old tires too.! I did 870+ miles on the way home Sunday, the car was simply a pleasure to drive…it’s gonna make me buy new tires though.!!

Honestly, if you’ve thought about this mod, go ahead and do it. For $325, I promise it’ll be the cheapest mod you make with the greatest results. Worst thing that happens, Jim puts you back to stock and gives you your money back.!!

Thanks again Jim and Terri.!! It was a pleasure speaking with you guys and truly love my upgrade.!!

Mike P.

Bob L – Grand Sport – Flashed at Carlisle

I’ve put about 500 miles on my car since the upgrade. I want to thank you for the software upgrade (new Tour and Super Sport) you and Terri did on my 2012 Centennial Grand Sport at Corvettes at Carlisle 2019! While I wasn’t unhappy with the car’s ride and handling as it came from the factory, I thought that with your credentials I just had to get the upgrade.  Boy am I glad I did!  The harshness is gone, and the car feels so much more settled in both modes.  Previously, my car always skipped over a washboard road near my home. Now, In either Tour or Super Sport the car soaks up those bumps so controllably I can’t believe it! The car now feels so much more planted and stable under all road conditions and speeds.  By the way, I think this upgrade also eliminated most of the wheel hop/drivetrain shake that I previously experienced on hard launches and shifts. 

Mark W – Carnon, France – ZR1

I have received your controller. Thank you so much!! We have changed the original with yours, and the result is phenomenal!! Cornering is like with my C7 Grand Sport, nothing to do with the standard. There is à ‘’special corner’’ leaving the High way, to my home, he is 270° twisted, and only one line (very narrow, absolutely no space, if you slip you are going directly into the barriers) à real challenge to go fast here, without breaking the car.   This corner my personal record with the Micheline PS4 and the standard calculator was 0,98 G. (alone in the car) The first time I tried your calculator with Micheline PS4 (two in the car – The tuner and me) 1,10 G ! I am really happy. Thank you so much Sir, hope to get your news. With all my respect and all my friendship, Mark

Sean A – 2011 ZR1 – upgraded at Carlisle

I can’t say enough about how dramatic the improvement in the ride quality of the car is.  The new tour setting is super smooth and stable which makes for a great grand touring setting.  The super sport setting is very firm but still much more composed that the old sport/track setting – in some high speed turns the car is very flat and I can feel the rear planting on power.  I can’t wait to try it on the HPD event in October.  Thanks Sean

John G – 2011 Grand Sport – Upgraded at Carlisle

Jim it was a pleasure speaking with you at Corvette’s at Carlisle. I had the mag ride upgrade done on my 2011 GS and what a difference. Prior to the upgrade there wasn’t really any noticeable ride difference between Tour and Sport(track). Now the difference is significant. The biggest change is in the Tour mode that now provides a much more refined ride, minimizing rough road surfaces that prior to the upgrade caused the car to bounce around. I noticed the difference in the feel as soon as I departed the fairgrounds. Handling is also improved. This was money well spent!

Mark E – 2012 Grand Sport – Upgraded at Carlisle

Thank you for upgrading my MRC on my 2012 Vette Grand Sport – I must say I felt a positive difference within a few miles of driving. I had a chance to thoroughly experience the difference when I drove from Glasgow Kentucky to Houston Texas – anyone with MRC who wants a better ride quality should do this upgrade.

Jim A – 2013 Grand Sport

“Jim and Terri Mero stopped by the Indianapolis area on their way home from the NCM 25th Anniversary celebration to upgrade three C6s. I thought the ride of my 2013 GS with MRC was pretty darn good as it was. After reading about the ride and handling improvements after Jim’s upgrade, I decided to proceed. The improvement in the ‘Tour’ mode was noticeable right away. It reduced the harshness over bumps, irregular surfaces, and pavement transitions without sacrificing the great Corvette sports car feel. My wife noticed the reduced harshness right away also, so we are both very pleased with the upgrade.” The improvements is ‘Sport’ are similar to ‘Tour’, yet it’s still a ‘Sport” mode. The MRC upgrade makes me a really happy camper. . Update: The MRC upgrade is wonderful. The more I drive the GS the more I enjoy the feel of the ‘new’ car. Thank You for stopping by on your way home

Craig F 2013 Grand Sport – – upgraded at Carlisle

I went to Carlisle yesterday and had Jim do his upgrade on my 2013 Grand Sport Coupe with the 6-speed manual and dry sump.

I could tell a difference as soon as I headed home from Carlisle, Pa. to Baltimore, Md.

My route was basically a two-lane road for about 60 miles, that varies from 25 mph while passing through several small towns with bumpy roads, to stretches of 55 mph smooth up-and-down winding mountain passes. It’s a fun drive, and there were lots of Corvettes driving to and from Carlisle.

What I noticed was my Tour setting, which always seemed comfortable but maybe too floaty and leaning for a Corvette, now feels appropriately controlled, but by no means uncomfortable. I’ve only driven those 60 miles, but it seems now to be about perfect for daily driving.

My Sport setting, on the other hand, usually seemed really stiff . . . . I did use it when I was on back roads driving quickly and again it bothered me as too stiff.

Sometimes I wish there was a setting in the middle of the factory Tour and Sport modes. That seems to be exactly what Jim gave me . . . two new settings, both in the middle of the original factory settings.

And I do not track the car so I doubt I will ever miss the original factory Sport setting.

I bought my car new and searched for a 2013 Grand Sport specifically with the F55 suspension. I have intentionally kept my car completely stock . . .so doing this reprogram was my first and only modification. I have absolutely no regrets . . . the suspension is clearly improved.

If you’ve got a C6 with the magnetic ride option I highly recommend Jim’s upgrade.


Chris Z – 2010 ZR1 – upgraded at Carlisle

It was great meeting Jim and his wife at the 2019 Corvettes at Carlisle. I asked Jim to perform the software modification for my Magnetic ride suspension which was – New Tour and New Sport mode – on my 2010 ZR1.

Prior to the upgrade, I could not tell the difference between the stock two modes and often thought, “Is the mag ride working?”.

After Jim performed the upgrade, the New Tour and New Sport mode was noticeably different.

The NEW Tour mode made the car feel like I was gliding over the road with less side to side roll, which was noticed prior to the modification. The small bumps, and annoying road cracks are all but gone in this mode. We drove the car home in tour mode for 200 miles and loved it.

The next day I took to car out to check out the New Sport mode. All, I can see is I was grinning ear to ear in this New Sport mode. Prior to the upgrade, I rarely ever used the sport mode, since I could not feel a noticeable difference from tour. Now the car is really fun to drive. In this mode, the car feels dialed in when taking hard corners at speed. I felt more connected to the car, and the car feels more predictable. I absolutely love this mode and is now my favorite mode when driving.

Thank Jim!


 Joni L – 2013 GS – upgrade installed in New Stanton PA

It was great that Jim could make a stop enroute to Carlisle. I haven’t driven a lot since the upgrade but so far, I’m very pleased with my upgrade.

The ride quality is improved, and the car seems to drive better. I have lower back issues and can tell the difference between before and after pretty easily.

I don’t track the car and do a good bit of my driving on the back roads in my area. The GS seems to have better turn in now. The upgrade is the best thing I’ve had done for this car besides getting Michelin tires.

The GS drives better and feels better on our crummy PA roads.

Meeting Jim and his wife was wonderful, great people.

I highly recommend Jim and his upgrade!

David G – Base Corvette (Callaway) – Flashed at the NCM Caravan

We finally made it back to California from Bowling Green. The Controller was the best thing done to my C6 Callaway. The sport mode was changed dramatically to a great ride also with the cruise mode as well. I will keep referring other Corvette members / other Corvette owners about the Magic in your controller to enhance their cars handling. Again, thank you for your generosity and was a great pleasure to meet you in Bowling Green. Best Wishes to your continued success.

Etienne K – 427 Conv. Flashed at Carlisle

After strolling the grounds at Carlisle, I came across Jim’s booth. I was very interested. The settings on my 427 convertible could have used some tuning. I have felt that the Tour mode was too harsh for street and highway driving. The joints and bumps were getting harsh in the seat. Jim and his wife were very helpful in explaining the upgrade and the warranty. We decided to move forward with the tune. On the way home from Carlisle, we were pleased with the ride. Much smoother. I haven’t tried the Sport mode yet, but it is like the Tour mode, the settings should be great for the limited track time that I do. Good investment in a car that I hope to drive for many more years.

Michael M – 427 Conv – Flashed at the NCM Caravan

The trip home was great, overall ride was greatly improved. Car felt more stable, handling and ride was more responsive, but the best thing was what we did Saturday before we left. We put it back on the track and man did it allow me to show out for everyone!!!  It handled way better with on the track that it did the two days before.  Thank you, Michael and Sherri–

Keith – 427 Conv. Upgraded at Carlisle

Jim did his upgrade on my 427 convertible at Carlisle. Quite the improvement. The ride home was considerably smoother than the ride there, both done in Tour mode. I haven’t tried Sport mode yet because despite some incidents of aggressive cornering in an effort to uncover hiccups, the car remained flat and balanced while still delivering a smoother ride. It also maintained better road contact when going over bumps at speed. Very happy with the results. Now when Jim and Terry find their way to Vero Beach I can get my ZR1 tweaked as well. Thanks Jim and Terry, Keith

Mark M – 2011 ZR1 Programmed at the NCM Caravan

Jim Mero thanks again, absolutely love the new Magnetic Ride Control upgrade, my ZR1 rides and behaves so much better. By far the best money I have ever spent on this car!!! Highly recommend to any C6 owners with MRC. We made its back to Southeast Texas so I’ve put about 1000 miles on the new MRC calibration upgrades and all I can say is WOW they are absolutely fantastic, the jarring harshness on rough surfaces is gone, the car seems much more planted. Thanks again for greatly improving my suspension and the time you gave us just talking.

Lawrence C  – 2009 ZR1 – Upgraded at the Caravan

It was A Pleasure meeting you and getting the MRC Upgrade Vette rides a lot better more balanced smoother on bumps I’m glad I did the upgrade. Really Enjoying it! Thanks, And God Bless You!

Bob S – 2011 ZR1

I want to thank you again for going out of your way to flash my car, I really appreciate it. After driving the car around I really feel the difference. I like driving the car even more now, if that is possible.  The car goes over bumps and rough roads so much better in both touring and sport.  I love the steering in both as well.  I can’t wait to take it down to the roads you told me about in southeastern Ohio. Thanks again for upgrading my car.

Rhett L – 2009 ZR1 – Programmed at the NCM Caravan

I had my 2009 ZR1 upgraded by Jim Mero. At first, I could not tell a difference the roads were really nice and smooth at the resort down to bowling green. Got back to the hotel and took a little cruise up to the museum. Saw the road that makes you say this is going to hurt. Almost smooth as glass going over that patch and dip. Now I am looking for some test roads to try out the tour and sport settings. Real everyday test will be when I get back to Texas roads. Thanks for signing my ZR1 #136. Jim Mero.

Phil C – Z06

Thank you so much for helping us tame our rides. Tour mode is fantastic, it rides like a new car. Super Sport is fantastic as well.  Perfect cornering but great over the bumps.

Bryce D – Base Corvette w/MRC – Flashed at Carlisle

Jim, while the drive home from Carlisle (420 miles) there was a much more improved ride.  The car handled rough roads so much better.  Then when I got into a much more spirited drive that I really noticed the difference. Both in the ride, the steering response and how car was composed during the corners.  Very much improved, Thank you.

Jason M – 2011 ZR1 – Programmed at Carlisle

I have to agree with your comment about the new tour and new sport. What a difference it made on my ZR1!  Both tour and sport glide over bumps, the body motions are much more balanced. Steering is more responsive.  It’s still a Corvette but no more dash rattling over the bumps.

Larry R – 2011 ZR1 – Programmed at Carlisle

I had my ZR1 done at Carlisle last weekend. It only took a few minutes. The cars ride is so much better i still can’t believe it is just from reprogramming. Feels like a new and better car.

Larry – 2011 ZR1 – upgraded at Carlisle

I had the MRC upgrade done to my 2011 ZR1 on 8/23/2019 at Corvettes at Carlisle PA.

The upgrade that I picked was the “New Tour 2 / Current Sport (Track)” option. I chose that option for two reasons. First, to give me the “stock” sport mode for when I am on the track or the twisty fresh paved roads I sometimes come across. And second, for when my wife drives with me on not so new roads.

A little about me. I don’t work for Jim Mero or have any affiliation with him or his company. I don’t work in the automotive industry and am not an engineer, actually I am in the investment business. I am also not a race driver, but do enjoy the track lessons and time on the track a few times a year. I chose to have him work on my car based on his reputation experience and personal recommendations from members of my Corvette club. I paid full price for the upgrade and was not offered any discounts or compensation for a positive review.

First Jim and his wife are very nice people, friendly and care about what they do. After you meet them you would invite them to your home for dinner. The upgrade appointment was on time and done in only a few minutes. One of the things that helped me personally bite the bullet on this upgrade is that no suspension part needed to be replaced, it’s all electronically uploaded. Jim Mero offers, that if you don’t like it he would put it back the way it was and refund 100% of your money.

My review from a not engineer may help other non-engineers get a feel of how I perceive the upgrade. My first two rides after the upgrade was a 30 minute rides from Carlisle PA to my hotel and back the next day. At first as I am changing the modes on the changing roads it was a bit hard to tell if the control was doing anything or was the road just smoother on the section of road that I put in New Tour 2 mode. I did not believe that difference could be just from the MRC. In both modes the car tracked flat and stable on the on and off ramps without any noticeable difference in body-roll at moderate speeds.

The review of the upgrade on the highway from Carlisle to NJ was much more informative because of the miles and road variations I encountered. The car rides much better in the Tour 2 mode then the stock Tour mode. The best way I can describe the ride difference now between changing from sport to tour modes is it’s like being able to change the sidewall aspect ratio and compound of the tires on the fly as for as smoothing out the bumps on the road. I would veer off the side of the highway in each mode and can feel the difference in how the shocks handle the bumps at highway speeds. Much better than before the upgrade. Now when I switch to Tour, the bumps on the road almost go away and I feel that the car is planted on the road, especially on bumpy turns. The car handles better in tour mode than sport mode now on the road most of the time, since the roads are not in such great shape by me,
Before the upgrade I would drive in Sport mode most of the time. Now I am driving in Tour mode when I am not on the track or very spirited street driving. This upgrade has simply improved the ride quality of my Corvette in real world roads without giving up any of the performance of the car on or off the track. I would recommend this to anybody that has a C6 Corvette with magnetic ride control
 as one of the best upgrades for the Corvette. If you have an early C7, my understanding is that you can upgrade to the new MRC programming at the dealer. All this for less than the price of a new tire, what a great deal! 


Thank Jim!

Tom S – 2012 Grand Sport – upgraded at Carlisle

Thanks, Jim. The ride home on Thursday after your calibration was amazing.  The ride down to Bowling Green with the calibration you loaded onto my car at Carlisle made the trip very enjoyable. Thank you!

Jason M – 2011 ZR1 – upgraded at Carlisle

Jim, thank you. I cannot overstate what a difference the upgrade did with my ZR1. I am beyond amazed with the improvement it made. Thank you again and it was an honor to meet you today!

Bob D. 2009 ZR1

Jim, I put the unit in today, very noticeable upgrade. The tour setting is significantly more compliant and feels much more under control. Bumps that would usually unsettle the suspension don’t have that issue anymore. The sport version was also very good.  My wife wants one for the convertible pronto. Thanks, Bob

Rob W – 2013 ZR1

Just picked my 2013 ZR1 up from having the Jim Mero Vehicle Dynamics MRC upgrade. I did the controller exchange program and have already shipped my original controller back to Jim.

I went with the New Tour/New Super Sport combination. The difference in New Tour and the original Tour mode is night & day. I’ve driven it over some really rough roads (we have a lot of them in Tulsa) and ride improvement is substantial. So far, I’m very happy with the purchase.

Norby Dippold – 2011 Grand Sport – New Tour/New Sport

Well after a 1370-mile road trip with the changes in place on some of the ugliest highways (I69 MI) in America I am convinced that this is one of the best changes that I have made to my 2011 C6 GS. In Tour mode those highway bumps/jars seemed to go away, the car was more stable and easier to drive hence more fun to drive. There was less slap over those tar strips on the highway and the car seemed less noisy inside. The GS feels happier now and I am much happier now.  This is the way the C6 GS should have come!   Jim, I owe you a great deal of thanks as you made driving my C6 GS much more fun!



                Much better ride quality

                Stable and planted

                Gives you greater confidence


                Easier to drive

                More fun to drive


Matt D, 2009 Base C6 with MRC New Tour/ Super Sport


Below is my review of your MRC Controller in my 2009 C6 Corvette A6 4lt:

In both the new “Touring” and “Sport” I feel like I am now more in tune with the Vette. I have never really felt like I had control of the car before due to the stiffness and firmness of the ride. I really didn’t enjoy driving spirited driving through the mountain roads or canyons (even though I tried). Now I feel really “In-Tune” with my Vette. I have much better control and I get improved feedback. It feels like it hugs the corners and doesn’t want to skip around.  The steering is much better in both modes as well.

On the freeways and streets, the ride is so much smoother, it feels like the Vette glides over simpler bumps and does not exaggerate them. In both “Touring” and “Sport” modes, on larger bumps the impact isolation is much better.

You can definitely feel the difference in the steering between “Touring” and “Sport” modes. The “Sport” mode steering gives you a tighter responsive steering. When switching between the two settings, there is a significant difference in both the suspension and the steering.

Driving experience:

“Sport” mode feels a lot more like it squats into the turns, it feels like I have better control, almost as if I bought new stickier tires. To me, the rear is where I really felt a difference along with the steering through the Los Angeles Forest Highway (Mountain Road).

“Touring” mode now travels over bumps and dips and washboard type roads with ease. It feels smooth and more responsive. On the freeway, when I used to hit the bumps for the underpass, that would originally almost knock out the fillings in my teeth, it is now extremely less aggressive. The same goes for “Sport” mode as well.

I also now enjoy driving very spirited through Los Angeles Forest Highway (Mountain Road) in the “Touring” mode as well, it feels much more stable and it hugs the corners with ease and a smoothness like never before.

It’s a remarkable feeling to be in-tune with the Vette and have confidence when driving twisty roads as well as having an extremely comfortable ride in both the new mode settings.

Much thanks to Jim and taking his time to take care and consider the C6’s – Thank you!

Trey F, Rio Rancho, NM 2012 Grand Sport

I installed the module this evening. I have to say, it’s an impressive difference in the ride quality for normal city driving It’s a wonderful vehicle, and the ride is amazing now. Thank you very much. I am proud to have this in my car. Overall, it has improved with the update dramatically. Thank you again for the module and customer service. I am very happy.

JB, North Charleston, NC – ZR1

I too got my ZR1 Mag ride upgraded with the Jim Mero tune. I did the Controller exchange. He mailed it Friday and I got it today (Monday), right on time to do the install once I got home from work.

Thanks to his YouTube channel and the video on how to remove it, this was straight forward.

Before I made the mod, I took out the car to run an errand in order to get a fresh feel on how the car felt all stock. Once I got home, I did the install and took the car back out for a quick spin around the neighborhood where I know a couple of spots that usually rattle my teeth out.

Very pleased with the new tour/sport mode. The tour mode is excellent, it smoothed the car over regular bumps. When I switch to sport, I can feel the car tightening (if that make sense), but still, not as hard as the original setting (rattle you to death really in comparison).

I’m pleased with the results; this is what I was looking for.

Rest assured this was an easy transaction and a fairly easy install.

Bill (2013 Grand Sport Conv.) and Larry (2009 ZR1) who drove up from Indianapolis, IN

Both Larry and I are really happy with the upgrade along with the wives too! Neither of us really knew what to expect and are more than pleasantly surprised and certainly glad we did it. All I can say is that I noticed the change as I backed out of your garage as the tires rolled over the expansion strip and didn’t jolt as before.

In the drive afterwards to the motel we could feel the changed ride and after overnight the difference was fully felt by both drivers and riders. The Corvettes are now more compliant over rougher roads and just have a much better feel overall.  It really does make the Corvette more fun to drive. As I told Larry had the upgrade been available before the C7 came out there may have been less C6 owners giving theirs up.

Mike – 2011 Grand Sport Convertible.

Last year I purchased a C6 Grand Sport convertible.  I bought the car in Texas and drove it back to Michigan.  In the fall of 2018, Jim asked if he could upgrade my car to get my thoughts. The transformation is unbelievable! The pleasure of driving the car in either tour or sport can’t be understated.  On my drive back from Texas I never put it in sport.  Now I do almost all my driving in sport. If I just want a nice cruising car, tour is perfect.  In both tour and sport, the car just glides over the bumps that used to beat me up bad.  Also, I noticed how much better the steering is, which surprised me.  Now I can’t imagine driving the car without the new programs.

Ross W – 2011 Grand Sport Coupe

After a total of 10 hours of seat time.  In both tour and sport.

Mix of freeway 55-90mph with hours rural backroad and small-town slow driving. 

I like this new cal so much. Both tour and absorb the bumps very very nicely and are still stable and composed.  Everyone will notice a considerable difference.  

Josh H – 2010 ZR1

Jim come to my house to put the calibration in my 2010 ZR1. When I bought the car, I had to drive it back from Texas to Michigan. 18 hours on the road was a bit of a headache. The car was a blast except for hitting potholes, railroad tracks, and impacts in general. Since the calibration, my car drives and handles 100x better. The impacts seem to be non-existent. Going over railroad tracks are a breeze and the sport mode is a true sport mode now. I’m amazed every time I take out my car. Love every bit of my new calibration. 

Blake L – 2009 ZR1

The ride and handling for both modes is a dramatic improvement. As soon as I left Jim’s house in tour mode, I instantly felt a more “modern” feel to the car. Very comfortable now and yet more the handling is more responsive. I do not feel the hard rebound over larger bumps. It doesn’t pound my dash when I go over railroad tracks like it used to.

I feel that there is more steering response at lower speeds and of course at high speeds.

When I put it into sport mode, I feel a good difference. Now I feel a nice transition between tour to sport. Before the upgrade, I never put it in sport unless I was showing my friends how harsh it was. I am driving it in sport mode more often now. The ride is so much better as well as the cornering.  I want to say it feels like a new stab bars were installed. It’s that much more balanced through the corners.

Galen C – 2012 Grand Sport

Just wanted to let you know how happy I am with the driving improvement. Drove over 250 miles yesterday. I am no expert but would say the car feels much more stable, planted, kind of hard to describe but driving over rough pavement sections has a sense that the suspension is working much more refined. These are really nice cars and your program just adds to the experience.   Galen

Hib Halverson – 2012 Z06/Z07 

In driving my Z06/Z07 with Mero’s MagnaRide calibration, a couple of improvements I have noticed: first, I live in a town where the City Council doesn’t pay much attention to existing infrastructure. As a result, On a regular basis, I’m on roads with rough, heavily-worn asphalt, pot holes, sections of cracked and broken-up pavement and fragmented road edges. For around-town driving, I have MR set in the “Tour” mode and with Jim’s MR cal the car gets over all those crappy road surfaces with a bit more comfortable ride. On roads which are in better condition, but with bumps and heaves, the ride seems more controlled.

When hammering my ZO6 through the twisties in the mountains near my home–State Route 33 from Oaji, California over to where joins with SR166 is a favorite of mine–I put MR in “Sport” mode. With the Mero-calibrated “Sport”, when driving over high-frequency, low-amplitude chatter bumps, ripples, cracked pavement and stuff like that, I don’t feel those disturbances quite as much. Also, Sport, with a Mero MR cal, seems more appropriately-damped in that kind of driving than did Sport with the stock MR cal. Lastly, the car’s response to steering input, especially in an autocross movement or an emergency evasive maneuver seems different. It seems weird to me that a difference in how the MagnaRide dampers work can affect steering, but it does. Maybe Mero can explain why that is. In any event, the best way I can describe this situation is that steering is more “crisp”–for lack of a better word.

In short, I was impressed with Jim Mero’s C6 MagnaRide calibration, not only because of the improvements discussed above, but because hist stuff is for “real world” driving and not specific to track use.  Hib Halverson

Thousands of C7 customers have had Jim’s upgrades installed. The success of the C7 upgrades prompted Jim to develop upgrades for the C6’s. Here are a few of the reviews of the upgrades by the owners!

Corvette forum member: Chadrad

Add me to the list of those who are extremely happy with the mag ride update! I’m so pleased that I’m cancelling the order I placed for non-run flat Conti’s. My reason for switching to a non-run flat was purely for the improved ride. It feels like a different car since the upgrade. I prefer Sport Mode but the marginal roads around Central Indiana caused teeth chattering, even when I was in Tour Mode. It was so bad that I seriously considered getting rid of my beloved GS. It had gotten to the point that I was afraid to drive outside of my work commute route, where I was able to memorize and avoid the road hazards. These road hazards were no issue in any of my other vehicles and I would otherwise never have even called them road hazards, but for the GS. I love my car again!

Corvette forum member: Allen_B

Tour- Significant improvement in daily drivability, more “plush” with routine bumps better absorbed AND the car feeling more planted. This would seem counterintuitive when the words plush and planted being in the same sentence but that seems to be the case. While bumps and road imperfections are better dealt with, the car doesn’t seem floaty. In truth, the car seems more predictable in turns (i.e. off-ramps and the like) since the imperfections are better absorbed without upsetting the suspension. So far, this is the biggest improvement for me. Sport- Ride is less punishing on the road but the steering “seems” heavier than before as a positive. Feels more responsive in general (thinking due to steering), while not feeling “nervous” and “twitchy”. The Sport mode is more taught overall but at the same time more usable in routine driving…

Corvette forum member: Shinobi’sZ

In Tour mode the car felt like it skimmed over the bumps confidently absorbing the undulations and filled potholes and the steering felt perfect. SR 12 is an extremely bad road as it lies under the level of the levees and has expansive soil under the structural section of the road. It is almost like a roller coaster in some spots. So, it was easy to tell the difference between driving to the dealership and then from the dealership after the MRC update.

Corvette forum member: Checkmate1

Tour Mode – Plush and absorbs the bumps a lot better than stock. Road imperfections do not shake the car and make it hop anymore. Word here is ‘compliance’ with road information that trickles through. Sport Mode – Sport mode made the most difference for me. In Sport mode the chassis and damper are in perfect harmony. No disconnect. Verdict – Worth every penny. The key thing here is the Chassis and Damper are in sync in any mode. Thank you GM! This steering junkie loves his car more than ever before.

Corvette forum member: don7790

I just got back from a hundred-mile trip home, so I could tell if there is any change. Let me tell you it was like driving a new vehicle. For the first time I could leave it in sport mode on I90 in MA. The biggest difference was that I could drive on the interstate in sport mode without rattling my teeth out. All the bumps and cracks in the road have smoothed out and the steering has some real feel of the road. In tour mode it was smoother than my CTS. This upgrade has to be better for the vehicle not to be beat on from every bump in the road. I have paid for many improvements over the years for all of my vettes. But this was, by far, the best improvement. For those of you that haven’t felt any difference take it back to the dealer because something didn’t take. This is not a placebo effect, there is a big difference.

John De Long

Was it worth it? My goodness, I just got a new car! The first thing I noticed was that steering input was immediate and precise. The thumps were gone, same run flats so it is not tires. There was so much improvement that I actually went to the Sport Mode, something I almost never did before on the back roads, nor almost any road in Pennsylvania. It was great; I was actually enjoying the Sport Mode and kept it there for almost half our outing. I did some roads that I know well, so well that I have memorized the humps and road patches. I now have a Z-51 with all the added capabilities but with the pleasant ride of a base touring car. Conclusion, worth every penny.

Corvette forum member: Dellrose

The car now just feels much more stable and connected to the intent of my steering regardless of road condition. I put a lot of highway miles on mine and always felt I could never fully relax in touring over 80 mph. Not anymore! I pushed it in Sport and Track on some twisties a couple days ago and everything just seemed more planted and willing to take throttle. The steering input are without doing something unexpected as well. Well worth it guys….

Corvette forum member: Kracka

All I can say is “wow” when it comes to the comfort aspect! The car is now handling sharp impacts and rough roads better than it ever has! I intentionally drove it on a certain lane on a concrete road near my house that is frankly horrible from all the construction trucks driving on it. I will typically avoid it whenever possible. The improvement was night & day; the car stayed planted, felt smooth, and wasn’t jumping all over the road anymore.

Corvette forum member: Patches

I am so happy with the change in how the car feels now. I’ve had a few weeks of commuting to get the feel of the new calibration and it has made a big difference in the feel of the ride. The harshness over rough roads in Tour mode I used to cringe at is gone. The change in Sport mode is similarly improved. This is truly a significant change in the performance of the system and exactly what I was hoping for. Finally, a mag ride setup that can handle with composure most of the crappy road conditions I encounter here in SoCal.

Corvette forum member: mtaxman

The suspension tune upgrade has been great. So much more composed yet not out of character – its still a corvette. Very nice. Time and money well spent.

Corvette forum member: hcvone

Had this done to my 2017 Z06/Z07, the difference was like getting a new car. It went from bone jarring in sport mode to being able to drive the car on any road in sport mode. The were roads I would avoid because they would chip your teeth in tour mode. Now tour mode makes those roads feel like you are in a Caddy. The best 350 dollars I spent on the car to date.

Corvette forum member: Iclick

What I didn’t expect was immediate, instant-gratification. On my ride home I felt a noticeable change in ride quality in Tour mode.  This is all good because I now feel like I have two suspension options for the street (Tour and Sport) whereas I always left it in Tour (or Eco) before.

Corvette forum member: pkincy

On the 10 mile mostly freeway drive home from the dealer it did feel like the car was smoother in Tour. The car sat until today. Today I did my normal 40-mile round trip to the Club. I normally run in Tour because the route is really too rough to comfortably run in Sport. At about 10 miles or halfway there, the Tour setting had been so smooth that I switched to Sport. My butt o meter says that Sport is now more comfortable on normal roads at normal speeds than Tour was before the tune update. I ran in Sport all the way home and even tried to hit some of the manhole covers that I normally avoid, and the car is just simply much smoother. I am sold.

Corvette forum member: REPOED C7

I could tell the difference in the suspension calibration immediately. Sport mode took the bumps like the original Tour mode, and the new Tour mode was like driving on a cloud. The new Sport mode calibrations takes bumps like the old Tour mode. The new Tour mode is freaking awesome. There is no bounce when coming down the back side of a hump/bump. I was hoping to keep the car in Sport mode most of the time now, but the new Tour mode is too nice of a ride not to use during normal highway driving.

Corvette forum member: shadeshift

Touring mode is a vast improvement and feels perfect for cruising and regular driving. I never used Touring before because it felt like a base, non mag ride suspension, floaty without optimized damping. There are no more noticeable bouncy low frequency oscillations. They’re slowed way down during compression and the car settles softly. Overall ride stays very flat and compliant. It removed pretty much all high frequency bumps or rough road feel through the chassis. It has a very plush ride quality, if that makes sense. Cruise-a-licious indeed.  Sport mode feels slightly softer overall. It’s more noticeable in the rear end during acceleration. Overall ride quality is improved in that high frequency oscillations are a touch more dampened without removing too much road feel. The overall planted feel is very similar, but it feels more optimized for more general driving. I only used Sport mode before, but now leave it in Touring mode 90% of the time. Once I get into twisty sections I switch over to Sport as there is less deflection through the corner and reacts more quickly to bumps. It’s easier to control once your foot is down.

Corvette forum member: Formula52

I am one happy camper!!!! Like everyone else, well worth the $350. The car in tour seems much softer over bumps. In Sport mode it seems much more planted and steering gets nice and tight at highway speeds. Did an aggressive move on the highway and the car seemed like it was on rails. I highly recommend this upgrade.

Corvette forum member: Flo

I like a lot the new feeling it gives. The car is much better controlled, and the feedback from the road is better too. It’s really impressive as if it is a new car. No regret for having done.

Corvette forum member: javenius

Had my ’15 Z51 done a week ago now and the improvements were noticeable immediately. In my opinion, it is definitely worth it! I drive in tour primarily and the ride is definitely firmer (in a good way) yet smoother and is much more comfortable. The interstate concrete seams are much less noticeable. I have switched to Sport several times and the ride in sport is firmer yet smoother as well.

Corvette forum member:  gpotski

Just had my 2015 Z51 coupe upgraded, and the ride is much smoother. Sticks to the road better in Tour, and Sport is also absorbs road bumps better. Well worth the cost.

Corvette forum member: 2K14C7

Like others have stated it’s a little hard to explain exactly how the difference feels but there is less “jolt” on bumps and a smoother overall ride in Tour and Sport.

Corvette forum member: bufalobob

I live in ski country and some of the roads can be quite rough. Where I had to use touring I now use sport. Less harsh on potholes & washboard.

Corvette forum member: c54u

For me, the car feels better planted on the road and does not skip over imperfections giving it a more refined ride. The ride has noticeably smoothed out.

Corvette forum member: NicD

I was finally able to update my magnetic ride control with the latest GM performance calibration a few days back. Gone is the floaty feeling in Tour mode yet it is still nice and soft. Sport mode is still firm but absorbs the bumps in the road better. Overall, I can say that for me it was worth it.

Corvette forum member: dashotgun

My review of the difference is that tour is much smother, less hars,h and seems more precise. Sport is also less harsh, you still have good rood feel but it does not punish you to reveal the surface of the road. I have been flipping back and forth from tour to sport. I almost never drove in tour, but it is so damn comfortable now, may leave it in tour for general non sporty driving.

Corvette forum member: Puttnutt24

I felt the improved suspension as soon as I let the clutch out. I couldn’t be happier.

Corvette forum member: Asleep@thewheel

The new MRC update made it a different car. At slow speeds or in Tour mode it rides like my 5.0 Genesis. If you get fast, aggressive, or go to Sport/Track mode it feels like it turns even better. Make no mistake, I am not a pro driver, but this upgrade makes the car feel smoother when cruising and more precise when you push it.

Select Your C6 Corvette Model Below To Learn More About Our MRC Calibration Upgrades Available At An Introductory Price Of Only $325

Base C6 W/MRC

MRC Upgrades

Learn more about our MRC shock calibration upgrades.


Grand Sport W/MRC

MRC Upgrades

Learn more about our MRC shock calibration upgrades



MRC Upgrades

Learn more about our MRC shock calibration upgrades.



MRC Upgrades

Learn more about our MRC shock calibration upgrades.


Z06 W/Z07

MRC Upgrades

Learn more about our MRC shock calibration upgrades.



MRC Upgrades

Learn more about our MRC shock calibration upgrades.



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