Each Club Spec class has a spec tire model and size for Solo® and Time Trials competition. You can run any tire you like for Track Night in America®, Track Days, Road Rally, HillClimb, Race Experience and RallyCross (though tire choice may effect what class you end up in for RallyCross). For safety, Club Spec cars are also allowed to run 300tw (or higher) tires of any model as a wet tire for Time Trials events. Many use those tires also as their street tires.
BUY ONE CAR, DO ALL THE THINGS
That’s what Club Spec’s all about. Grab one, install the performance package and go compete in SCCA® Autocross, Time Trials, RallyCross® and RoadRally (with more in the works) without changing a thing.
These cars are fun, easy to own, and (importantly) easy to purchase. Topping it off, performance packages for Club Spec cars are affordable, attractive, and improve the ownership experience. Whether competing or taking a Sunday drive, Club Spec is the answer. Interest piqued? Your adventure begins by clicking below.
Announcements
- Posted: September 28, 2026
- Posted: June 30, 2026
- Posted: June 12, 2026
- Posted: February 9, 2026
- Posted: January 14, 2026
- Posted: December 19, 2025
YOU'VE GOT OPTIONS!
MUSTANG
The fifth generation with the 4.6L V-8. Known best by the chassis code S197, these cars were sold in the US from 2005 until 2009 and will carry the class letters CSM.
MIATA
The MX-5, or Miata, is the third generation, known best by the chassis code NC. These cars were sold in the US from 2006 until 2015 and will carry the class letters CSX.
CAYMAN
The Cayman/Boxster is the fourth gen, known best by chassis code 718, Base Model only. These were sold in the US from 2017 until 2025. They carry the class letters CSC.
CLUB SPEC NEWS
FAQs
Is there a spec tire, or is tire choice open?
Where do I start if I want to build one?
Pick your chassis, review the specific rules page for that car (CSM, CSX, or CSC), and reach out to [email protected] with questions. The Club Spec Facebook group is also an active place to see real builds and ask questions of current owners.
What programs can I run a Club Spec car in?
Without adding safety equipment, Club Spec cars are eligible for Solo (autocross), RoadRally, Time Trials and Track Days/Track Night in America- though we do recommend rollbars, seats and a racing harness for events on track. With some simple parts swapping, Club Spec cars can easily fit into an existing class for RallyCross. If you do add basic safety, you can add HillClimb and with a full cage Club Spec cars are perfect for Race Experience events.
Which cars are eligible?
Three right now: the 2006–2015 Mazda MX-5 Miata (NC chassis, class letters CSX), the 2005–2009 Ford Mustang GT (S197 chassis, class letters CSM), and the 2017–2025 Porsche Cayman/Boxster base model (718 chassis, class letters CSC).
What is Club Spec?
Club Spec is SCCA’s answer to “buy one car, do all the things.” It’s a tightly controlled ruleset built around a small number of specific, affordable chassis, so one properly built car can compete across Solo, Time Trials, RoadRally, Hillclimb and Road Racing. With some adjustments here and there Club Spec cars can even RallyCross —giving owners access to everything SCCA offers.
Contact Us
Still have questions? That’s okay! Complete the following form and a knowledgeable staff member will reach out as soon as possible.
CLUB SPEC PARTNERS
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The expression “where the rubber meets the road” exists for a reason — it is, in fact, the point where it all comes together. No one is better at making sure you get the wheels and tires you need to maximize performance and experience than the Tire Rack.
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Summit prides themselves on being a one stop shop for all of your speedshop needs, from safety equipment to go-fast bits, to fuel jugs and pressure gauges, Summit has it all.
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Mazda Motorsports brings long-time Road Racing support to Club Spec! You’l want to go to them for CSX expertise, kit purchase and setup advice.
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Sam Strano is the resident expert on the CSM car and kit. He hand-picked the performance kit and can set you up with everything you need.
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What’s stopping you? Whether you’ve got the Mustang or the Miata, you may select any brake pad you’d like for your car, but we highly recommend products from our great partners over at Hawk Performance.
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Now that you have it all, protect it all with Hagerty. They’ve got insurance options that can protect it on track, at home and everywhere in between.
