San Antonio, TX - JMS Racing

HIGH PERFORMANCE VEHICLE SPECIALIST

Import and Domestic Performance Upgrades and Custom Modifications

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Welcome to JMS Racing

JMS Racing is a locally owned car company that specializes in high performance vehicles and has been serving vehicle owners in San Antonio and surrounding areas for over 10 years. We understand that a car is so much more than a set of wheels. We are equipped with six lifts, a fabrication department, an engine-building room, and a dyno room.

We offer a wide selection of products from the top brands and manufacturers. Since every customer and every vehicle is different, we’ll take the time to learn about your wants and needs so that we can make the right recommendations. if you are ready for any racing-related products and services, then reach out to us today!

We are here Monday thru Friday 9am-6pm to service your needs.

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JMS RACING

San Antonio's Best Choice for Custom Car Upgrades & Maintenance

While there might be other places in and near San Antonio that you could go to but none compare to JMS Racing. Since we're a locally owned company, you can rest assured that you’ll receive a level of personal attention that you won’t get at a national franchise or big box store. We believe in only making the right recommendations based on your individual wants and needs. You can look forward to a customized experience from us. Here are some additional reasons to consider us:

Locally Owned & Operated
As an independently owned company in San Antonio, you'll find our service and prices to be better than many big box stores. Shop local and see the difference.

Honest & Fair Pricing

We keep our prices competitive and as affordable as possible to offer our customers the most value.

Quality Parts & Service

We use only quality parts and equipment from the top brands and manufacturers, all professionally installed by our experienced technicians.

100% Satisfaction Guarantee

We stand behind all of our products and services and offer a 100% satisfaction guarantee.

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UNMATCHED QUALITY & SERVICE
The JMS Racing Guarantee

We are a locally owned and operated auto repair company that cares about our customers and the community we serve. We're dedicated to providing the best products and services at fair and competitive prices, all backed by our satisfaction guarantee. If you're not 100% happy, simply let us know and we will do anything we can to make it right. We appreciate your business and look forward to working with you.

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WHAT PEOPLE HAVE TO SAY
Customer Testimonials

“JMS Installed a Borla Cat Back Exhaust system on my 2025 Hyundai N-Sonata! Sounds great! They are the only performance shop in San Antonio that is willing to add hp to a Hyundai. All the other shops laughed at me! Great job guys . I'm definitely going to be getting more work done there”

— David Beene

“JMS Racing exceeded all my expectations when working on my Corvette. From the moment I walked in, their team was professional, knowledgeable, and truly passionate about performance upgrades. They took the time to explain every step of the process, ensuring I understood exactly what was being done.

The results? Absolutely phenomenal! My Corvette runs better than ever—smoother, faster, LOUDER and more responsive. Their attention to detail and commitment to quality are second to none. If you’re looking for top-tier performance tuning or repairs, JMS Racing is the place to go. Highly recommended!.”

— Elite Tax LLC We Work for YOU not the IRS!

“I can't thank JMS Racing enough. I had them do a good amount of work to my 2006 Evo 9 and it really transformed the car. With the new clutch and suspension components, the car really drives like it just drove off the showroom floor. Even when I found out the ACD reservoir was overfilled and AC was disconnected, they brought me in same day on a Saturday and fixed it within the hour. Truly great work and great shop. Shout out to Antonio for his knowledge and expertise and I trust him with any and all future repairs/maintenance to my Evo. Because of JMS Racing I was able to have a hassle free track day and the car hasn't missed a beat since.”

—Ty Chase

"Best performance shop in SA! They've taken care of multiple cars of mine over the last 10 years or so. Domestic, Import, Euro, no matter the platform, they have a long proven track record of service and knowledge. Don't let other pop up shops sway you away from JMS, those other shops come and go quite often but JMS has been around a long time and is here to stay."

— Adam

"Set appt. Got in ,got out. George is the best at getting everything out of your vehicle. Need a tune, mod, or anything else based on your car. jms is the place to get it done. No doubt."

—Edward Guerrero

How Can We Help You?

Give us a call or send us a message using the form below.