Great place, honest services and very satisfied customer!!!

This is a great place, dropped car to get cam package, told me about 4 days, I expected about 10 days, car was done in 2.5 days, when I picked it up it was as expected and car was taken care of, very impressed! Thanks Matt

They do a great job! Everything was completed in a professional manner. I am very happy I used there shop!

Ive used 21st multiple times and the service is always great. They give honest opinions and dont try to oversell for unnecessary work.

Matt and the team originally did my Supercharger install on my 2015 6.2 L Chevy Truck. Two years later one of the (POS) AFM lifters collapsed. I have moved to Arkansas and had to trailer the truck back to Texas, but I did not want anyone else working on my truck. Matt quickly got my truck in and did the DOD delete kit with the ZR1 camshaft and a re-tune. Truck runs even better with the Blower cam and re-tune. TFC did exactly what they said they were going to do, for the quoted cost and even got it out quicker than expected. Great group of guys.

Great sevice and great work. Had headers and a tune done on my 2019 Camaro SS and I will be coming back for more work.

Came to 21st with a recently bought 05 6.0 GTO with the infamous lifter tick. After further inspection come to find out the motor was hurt. 21st built a healthy LS3 for the car and had it up and running strong in no time at all. They installed a CMC 20 boost cam so the car will be back soon for some boost. These guys do incredible work, thanks again

21st century muscle car is my spot Matt is fantastic Ill go back time and time again as a matter of fact Im getting set to make another appointment to get some electrical work done and once they finish that Ill be back again to get my tune done thanks Matt

Matt and staff are very knowledgeable about repairs and maintenance of corvettes...they will tell you likely scenarios about mechanical issues upfront and have very reasonable pricing and quick turnaround times

BEST PERFORMANCE SHOP! Been going to this shop for some time now, and they are always great. Dropped my car off last year for some fuel injector issues, car was fixed in less than 24hrs. My aftermarket fuel pump went out and I called Matt and had it ready for me the next day along with a new fuel pressure gauge! Beyond happy with the quality of work and how it’s done in a timely manner. Highly recommend checking them out! Thanks guys!

Wasnt happy with the bait and switch that left me with a worse performing system. If you cant build a better system for the same price either discount or use the better kit. Profit should not have come before service.

Another job well done. Switched out my Corsa Extreme back to the NPP Factory exhaust. As always perfect fitment and attention to details.Best shop in Texas ! Thanks Matt and 21st team.

The best shop in dallas..

The Corsa Extremes exceeded my expectations! You guys are awesome!

This is the best place for excellent work, great customer service, and very knowledgeable staff. I Got the supercharger package for my C7 Vette and could not be more satisfied with the professionalism and performance. I will be back!!

This place is amazing! It is a team of experts that provide high level service with high quality work at a fair price.

They installed a catback system and shifter on my 02 Camaro. Very professional, knowledgeable, and finished the work same day at the promised time. I am planning to have a lot more work done at this shop.

Made time to look at my CTS-V wagon, and took less than an hour to look over the vehicle and top off the clutch fluid. I’ll be sure to return.

There is no other place Id take any vehicle with an LS-family engine. Everyone here knows the C6 and C7 Corvette platforms like the back of their hand, better than any chevy dealership master technician by leaps and bounds. No games or BS, they are straight as an arrow with you. Matt is amazing, Id highly recommend working with him.Dyno is from manual 2015 C7 Stingray with just a couple bolt ons, e85, and a tune. Previous run was just e85 and tune.

These guys are the best in the area, hands down. Always responding to emails, calls, phones. Always on point and explain everything without funny games or tones. Fair pricing and honest work. You can’t go wrong!

I love this place! Did a great job lowering my car with eibach lowering springs! Thanks yall! 👍

This is the best place in north Texas to bring a Corvette. For performance, styling,and maintenance. These guys have worked on 3 Corvettes for me and they will be working on the next one. Larry Clayton

They have been doing the work on my 07 LS2 vette for years. Theyve done everything from basic oil changes to their heads cam package. Always professional and always in a timely manner.

Took my 17 silverado with a 5.3 for a tune and for 650 I was expected for a dyno tune but ended up getting a street tune. I know people who could do street tunes for 200-300. I took my truck to get dyno tune 2 weeks ago and I picked up 15wph more. They fixed my exhaust leak that was good but the tune wasnt what I expected especially for a street tune being that expensive.

Awesome work, awesome staff!

I rarely if ever log into my gmail in order to write a review, but wanted to make sure fellow Corvette Track Day/HPDE owners know this is the place to go in Dallas. Other than alignments, I will not take my car anywhere but 21st Century. I dont have a tricked out Corvette with all the turbos and loud exhaust and all that jazz, but I have had them do break-fix intense work with honesty, punctuality, and great knowledge transfer from Matt who runs the shop. Cant say enough good things about this place and the peace of mind that comes with finding a shop you can trust, when you put the car through so much hard driving as I do with 20+ track days a year. You get what you pay for. Ask for Matt, he is the man and hope he never leaves. *Also, they have a few dogs in the shop sometimes, very friendly and highly recommended to pet them.

Have been doing business here with John and Matt for over 15 years. The job is always done right, they back their work, they listen to my wants, and work is performed in a timely fashion. Highly recommend.

Im writing this review saddened I really liked all the guys I dealt with here at 21st. But recently my car has started to act up so I stopped driving it to keep anything more happenening to the car.I had a mechanic come to my house and help me start to break this thing down to find the issue or issues that were going on. I had 21st do a cam swap and an ls3 conversion swap done to the car. After looking deeper into the car i found cheap Chinese rollers that failed and tore up the cam. I also found metal all in the motor I sent out some of the metal and was tested and came back as stainless and other metals. The only thing stainless was the valves/lifters that looked to be grinded and grinded while they were in the car my guess is the only way that material got into the motor. The amount of silicone used the non correctly torqued bolts.Many things done that should not have been done i am not a mechanic but multiple things have been pointed out that do not make since and shouldnt have been done the way they were. I dont need to go on and on here about everything I found maybe something I need to discuss with either John Lingenfelter or the manager to the shop.Matt is a great dude his professionalism was above and beyond but some work done was not done properly. Its costing me my motor now at this point maybe I should of asked more questions about how and what work would be performed.I will have to reach out further. I spent over 5k with them to now cost me a motor which is going to cost me way more.

Thanks 21 century for getting my car in and out so quick you guys are truly the best! very knowledge on what y’all do definitely will be doing more business in the future.. everybody who want a nice, clean,&fast install call Matt at 21 century muscle cars he is great words can’t describe him y’all just go there and you will see.. thanks again 21 century s/o to Matt for making my c7 way faster

Very professional and knowledgeable about the vehicles they work on. I trust them with my Z06 and have enjoyed the modifications they have done on my vette. Highly recommend.

Great people. I need more work done its addicting

Where do I start? Matt is the man! I just had a TSP Stage 2 cam package installed on my 2017 Camaro 2SS.The time Matt takes to answer question after question and help you understand the technical side of what youre wanting to do is just 1st class all the way. My car is now at 470 rwhp and 440 to. True numbers I must say not inflated numbers that a lot of other shops love to lay down. The process was flawless from start to finish and oh yeah, the really nice lope is icing on the cake. The other Matt that no one sees in the back did the build and killed it! And of course Matt G nailed the tune like he always does.Thank you so much guys Im like a giggly teenager again.

Took my car there to get reprogrammed and they were pretty quick about it. No appointment was made, I just walked in. The waiting area was nice too.

They have worked on 3 C7s for me and all have made great power while remaining reliable

These guys are top notch! Only the best things to say about the work theyve done to my C7 Stingray, great quality of work and service, and super knowledgeable on future upgrade I plan to do. Definitely recommend them to anyone interested in performance upgrades and will continue to do more in time to come. Shout out to Matt for the great work he did on my headers and tune!

I had a great experience at 21st Century Muscle cars! I had lowering springs installed on my 2016 Mustang GT. These guys are true professionals who treat your car like it’s their own. I would highly recommend this shop! Thanks again Matt and the rest of 21st Century Muscle cars!

These guys are great! Quality work, fair price and most importantly honest! If you are a novice to aftermarket mods, they will steer you in the right direction. Bottom line, no one but 21st Century Muscle car will touch my car!

Wanted to share my experience with Matt and 21st century. They installed a cam package on my 17 SS 1LE and its exactly what I was hoping for in terms of power and reliability. Everything was scheduled and handled properly and the project was completed in the time frame I was given. After about 1k miles after the installation, I had an issue with my coolant leaking which we found out was a connecting clip near my radiator that had failed. Matt took care of the issue for me and also fixed a small rattle I had in my exhaust by adjusting it slightly. I think these guys are top notch and stand behind their product, I would highly recommend Matt and 21st Century.

Great customer service! John and Matt are honest and knowledgeable. Definitely recommend this business!

Matt and john are always helpful and very professional. Thank you for the awesome build guys!!!!

Have had the following work completed by 21st CMC on my 2008 Z06: H/C/I, headers, 102 throttle, Mamo and Corsa exhaust. Matt and John are both extremely very knowledgeable, professional and are always willing to take the time to educate the customer (even when I don’t ask the most intelligent questions). Your car will be returned to you in a timely manner and the workmanship is the highest quality that I’m aware of in DFW.

Always on time, always up front, always perfect install. Have done two cars through 21st. Sent multiple people there, and everyone shares the same opinions

I am having warranty work completed on my car at a Chevy dealership. They do not have the proper tools to complete the job. I called 21st after googling for muscle car repairs. I spoke with Matt who was very professional and knew exactly what was wrong with my car without ever seeing the vehicle. I called the Chevy dealership since they asked me if I knew who could possibly have the tool, to let them know who they could call to get my vehicle repaired. Once warranty is out on my vehicle, I WILL be taking it to 21st. Exciting to know that there are businesses out there that will still take care of their customers!!!

I just had headers, Intake, and tune installed on my ‘18 camaro 1le. The staff was all very friendly and helped with all of my questions. Everyone is very knowledgeable and professional. I am very picky and they exceeded my expectations. The shop is well kept and organized. I will be a returning customer.

Did an excellent job on our 2013 corvette with headers we will be coming back for a cam in a few months

Amazing job done by these guys. Dropped my Corvette off on Tuesday for exhaust and cam performance package and tune and picked it up the very next day. Awesome customer service and great turn around time. Theyve got a customer for life.

Always Great!!

The Team at 21st Century Muscle Cars were awesome to work with. They kept me well informed throughout the process of installing the Magnuson Supercharger for my Chevy Silverado. Matt delivered as promised and did an exceptional job explaining the entire installation process. Amazing Shop!

THESE GUYS ARE THE BEST. FROM THE SERVICE THEY PROVIDE, TO MATT TUNING. 2012 ZR1, INFERNO ORANGE BY THE WAY, AND TURNED IT FROM A BEAST INTO A MONSTER. THANKS GUYS!

I have a 1989 Corvette coupe heavily modified from the inside out. They would not touch it. The only thing they said was and I quote we dont work on old cars.

Awesome business. They worked with me when my order didnt show up. Thanks for the shirt man. A shirt will always make you feel better lol

These guys always do what they say they are going to do and when they are going to do it. I have had multiple dealings with them and they always meet or exceed my expectations. Matt is always helpful when I have questions or concerns. If you have any doubts about leaving your baby with them, do not sweat it!

Very knowledgeable and professional. Have nothing to say but good things about this place. Wouldnt take my camaro anywhere else.

Yall are the most professional place Ive ever known. Known for 12 years & always happy with my car & pleasant techs!!! Thank yall so much for taking care of me and my car!!!

Cant say enough good things about these guys and the work they do. Very professional, efficient and competitively priced. I am 100% completely satisfied with the work they have done for me and I will continue to work with them from now on!

Man i want to thank all the guys at the shop for making my vette a beast. Excellent work and great price. John is very professional and will make sure you have a smile on your face. People dont go any where else and trust me I know there are a lot of tuners but these guys are beyond that, they are professionals who what there are talking about plus their family company is Lingenfelter which speaks for itself. Once again they took my dream and made it even better than I could have imagined.

I have been taking my Vette here for years and never had an issue. I have always dealt with Matt and he has been very informative and very patient with me on upgrades, repairs, and maintenance. i am a very picky person when it comes to my cars, and things that go into it, and Matt has always worked with me to offer the best solution for my needs. They go above and beyond to make sure I am happy and well taken care of. Thank you 21stCMC!

Professional, timely, and knowledgeable thank you 21st Century Team2017 C7 Grand Sport

First time there and great experience. Very professional staff, work performed properly in less time than promised; impressive and rare. I will be back.

Great Customer Service

Great service and pricing. Got a Roush cat back exhaust installed on my ‘18 Mustang GT.

Excellent customer service built on workmanship and trust. John and Matt are the best!

Very knowledgeable, great job.

Just purchased a 2012 CTS-V and have dreamed about coming to 21CMC for years, couldnt be more pleased with the service. Just had them install my first upgrade and will definitely be back for more. Thanks guys!

They seem to be very knowledgeable about performance cars , I took my 2004 Z06 in for a new clutch and received it back quickly

The Best hands down...

I dont know much about cars other than I love them. The Panther City Corvette Club had recommended these guys. I had spoken with Matt for almost two years having him educate me on the work I wanted to get done. I finally pulled the trigger on my 2007 2LT, Z51 Corvette and had the following done: Borla S Exhaust, Callaway Cold Air Intake and a Dyno Tune. The car is absolutely amazing, the parts and labor were very reasonable. These guys are good!

WARNING!!!!!Whatever you do to your car dont let Quality Motorsport touch it they do bad business over there all your going to get is lies and excuses from the owner patrick..

They have done performance work and general maintenance on my Corvette. They always do a great job, at a reasonable price.

Excellent work. Just had my corsa xtreme valveback w/ xpipe installed on my c7 stingray. Car sounds amazing. They are professionals, installation was quick and flawless. Highly recommend anyone who needs work done on their muscle car, Sports Car or exotic.

Looking forward to getting work done.

Excellent customer service. If you want something as simple as a new exhaust or as complex as turning your car into a 1200 hp beast, this shop can help.

Always helpful with me... Great servive and they always come throw..

Great guys! Fast and passionate about their work.

Best shop in Dallas area hands down.

Took my car here while i was in Africa place was super clean and staff took care of everything they said they would even waited for me late after hours when i came back from Africa AAAAAAAA+++++++++++

Great experience and they are always helpful.

Always Got What I need Even If They Dont Build It For Me