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We proudly offer FREE shipping on eligible items throughout the contiguous 48 United States—making it easier to get the performance parts you need, delivered right to your door.
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New Arrivals
ISR Performance
Circuit Spec R is proud to be an authorized ISR Performance dealer, offering genuine ISR products at competitive prices.
Known for delivering high-quality performance parts at an exceptional value, ISR Performance develops and rigorously tests its products on both the street and the track to ensure proven reliability, precise fitment, and dependable performance.
Shop with confidence knowing you're getting authentic ISR Performance products backed by expert support from Circuit Spec R.
Swift Springs
Circuit Spec R is proud to be an Authorized Swift Springs Dealer, offering 100% genuine Swift products backed by expert support.
Engineered in Japan, Swift Springs are renowned for their lightweight design, exceptional handling, superior ride quality, and championship-proven performance on both the street and the track.
Shop with confidence at CSR for authentic Swift Springs, competitive pricing, and fast shipping.
Can't Find What You're Looking For?
Don't worry—we're here to help. If you can't find the part you need, simply contact us. Our team will do everything we can to locate it, recommend the right solution, or special-order it whenever possible. Your satisfaction is our priority.