The Winningest Brand in Motocross History
One-time desert racing pro and motor tuning specialist Mitch Payton founded Pro Circuit in 1978 at the age of 18. Early Pro Circuit customers were mostly Husqvarna-mounted desert racers and motocrossers who wanted Mitch to provide the same speed setups that he and his father had learned to dial in on Mitch's personal race machines. Word regarding the success of Mitch's motor building skills traveled quickly around southern California racetracks, and in no time the cult of Pro Circuit riders was formed.
Mitch closed his family's Husqvarna dealership in 1980 to focus his energy on the shop's aftermarket hop-up service business full-time. After perfecting his skills in the black arts of cylinder porting and polishing, Mitch and his small-but-elite team of speed specialists focused their collective energy on other bike parts and other brands. Custom-tuned exhaust pipes were the first Pro Circuit high-performance accessory to roll out of Mitch's cluttered speed shop, followed by racing silencers.
In 1991, Mitch and a four-man team of relatively unknown motocross racers—including a kid named Jeremy McGrath—contested the AMA Supercross series under the Peak Antifreeze, Pro Circuit, and Honda banners. Six months later, that team swept the 125cc East and West Supercross championships. In 1997, another rookie named Ricky Carmichael flew Pro Circuit colors to the 125cc National Motocross championship that Mitch had dreamed about winning for so many years. After claiming 29 AMA Championships and 6 Motocross of Nations victories, one thing has always remained the same: the Pro Circuit reputation for performance, raw speed, and winning.
Mitch Payton was inducted into the Motorcycle Hall of Fame in 2010. Today, Monster Energy/Pro Circuit Kawasaki continues to field the strongest, most consistent team on the AMA circuit, with champions like Ryan Villopoto, Dean Wilson, and Adam Cianciarulo adding to the legacy.
Ti-6 Titanium Exhaust Systems
The Ti-6 Titanium Exhaust System is designed to improve performance and power throughout the entire RPM range. Constructed of titanium throughout the head pipe, mid pipe, and canister, this is the ideal exhaust for any off-road or closed-course racer looking for improved performance, durability, and a professional factory look. Titanium construction delivers maximum weight savings while providing exceptional strength and heat resistance.
T-6 Stainless Steel Exhaust Systems
The T-6 Stainless Steel Exhaust System offers the same performance benefits as the Ti-6 but is constructed of stainless steel and aluminum for increased strength and durability while giving riders a more affordable alternative to titanium. The T-6 is perfect for any closed-course or off-road racer looking for improved performance, durability, and a professional look. Systems meet AMA amateur racing sound requirements and come equipped with USFS-approved spark arrestors, making it easy to alternate between off-road and closed-course racing.
T-6 Slip-On Silencers
If you're looking for an inexpensive, easy-to-install, durable performance silencer that bolts onto your stock head pipe, look no further. The T-6 Stainless Steel Slip-On Silencer is constructed from aluminum and stainless steel while offering incredible performance in a package that fits any rider's budget.
Two-Stroke Exhaust
Pro Circuit built its legendary reputation on two-stroke performance. The lineup includes Works Pipes—the same hand-crafted expansion chambers used by factory teams—Platinum Pipes for proven performance at a better price point, and Platinum 2 Pipes for budget-conscious racers who still demand Pro Circuit quality.
Two-Stroke Silencers
Complete your two-stroke setup with Pro Circuit silencers. Ti-2 and Ti-2 Blue silencers feature titanium construction for ultimate weight savings. R-304 silencers deliver race-proven performance in stainless steel. Standard 304 silencers offer Pro Circuit quality at an entry-level price. Type 296 spark arrestors keep you trail-legal while maintaining performance.
ATV & UTV Exhaust
Pro Circuit offers a complete line of exhaust systems for ATVs and side-by-sides. T-6, T-5, Ti-4, and T-4 systems are available for Yamaha, Kawasaki, Honda, Polaris, Suzuki, Arctic Cat, and Can-Am machines. Slip-on silencers provide an easy bolt-on upgrade, while complete systems deliver maximum performance gains.
Engine Performance
Beyond exhaust, Pro Circuit offers high-compression pistons for two-stroke and four-stroke engines, water pump kits, valve spring kits, clutch components, and complete engine performance packages. VForce4R reed valve systems maximize two-stroke intake efficiency.
Vehicle Coverage
We stock Pro Circuit exhaust systems and performance parts for Honda, Yamaha, Kawasaki, Suzuki, KTM, Husqvarna, Gas Gas, Beta, Sherco, TM, and Cobra dirt bikes. Coverage spans 65cc minis through 450cc four-strokes, plus a comprehensive ATV and UTV lineup.
Shop Pro Circuit at Dune Goons. The same parts that power champions.
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