Pro Circuit

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Pro Circuit Pro Circuit Products, Inc. is a leader in off-road motorcycle and ATV exhausts and aftermarket performance parts.

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 set-ups 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-hop 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. Pipe business was brisk, and pretty soon every PC-equipped racer was requesting PC performance modifications for other parts of their bike. Pro Circuit obliged by opening a suspension shop and expanding the available line of Pro Circuit exhaust systems and motor accessories for different bike brands. With so many Honda, Kawasaki, Yamaha and Suzuki-mounted racers across the nation running Pro Circuit equipment, it didn't take long for the PC brand to start racking up championships. Pro Circuit's phenomenal racing success rekindled Mitch's competitive fires, so in early 1990 he set Pro Circuit's sights on the holy grail in off-road racing: winning a national motocross championship. But doing so would mean challenging the Big Four at their own game and would require some serious financing. To make this goal a reality, Mitch borrowed a strategy from the auto racing game, securing a corporate sponsor. By doing this, Mitch changed the way motocross teams would be financed and packaged forever. In 1991, Mitch and a four-man team of relatively unknown motocross racers (including a kid named Jeremy McGrath) contested in 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! Although sponsors and rider line-ups on our record-setting motocross team change from year to year, one thing always stays the same: the Pro Circuit reputation for professionalism and winning. In 1997, another pro motocross rookie, this one named Ricky Carmichael, flew Pro Circuit colors to the 125cc National Motocross championship that Mitch had dreamed about winning for so many years.

The all-new Pro Circuit Script Tee just landed. 👊In stock now. Grab yours online or in the showroom.
10/12/2026

The all-new Pro Circuit Script Tee just landed. 👊

In stock now. Grab yours online or in the showroom.

10/09/2026

🚨Item of the week 🚨

Pro Circuit Radiator Hose Kit
Fits Yamaha Raptor 700R 06-07

Shop online or visit the showroom! 💨

For Sale‼️2026 Yamaha YZ450FOnly 1 dyno hourStock engine + suspensionPro Circuit T-6 Slip-On💰 $10,500 + taxOnly one avai...
10/07/2026

For Sale‼️

2026 Yamaha YZ450F
Only 1 dyno hour
Stock engine + suspension
Pro Circuit T-6 Slip-On
💰 $10,500 + tax

Only one available. Contact Pro Circuit or stop by the showroom for more info.

Another strong weekend in the desert. 🏆 and  brought home wins at NGPC Rd. 8, while .davis_508 and .alvarez.192 added a ...
10/05/2026

Another strong weekend in the desert. 🏆

and brought home wins at NGPC Rd. 8, while .davis_508 and .alvarez.192 added a pair of Pro II podium finishes.

Solid results all around at the Desert Classic GP. 👊

Rep Team USA and support the champ. 🇺🇸Limited Edition  MXON shirts and hats are available now.Shop online or grab yours ...
09/30/2026

Rep Team USA and support the champ. 🇺🇸

Limited Edition MXON shirts and hats are available now.

Shop online or grab yours in the Pro Circuit showroom while they last.
mxon |

Your 2026 250 Supermotocross World Champion 🏆Levi KitchenPro Circuit Racing
09/27/2026

Your 2026 250 Supermotocross World Champion 🏆Levi Kitchen

Pro Circuit Racing

Happy Birthday to the man behind it all, Mitch Payton! 🎂Wishing a great day to the man who has made Pro Circuit what it ...
09/24/2026

Happy Birthday to the man behind it all, Mitch Payton! 🎂

Wishing a great day to the man who has made Pro Circuit what it is today. Here's to another year at the races! 🏁

The Levi Kitchen limited-edition AMA U.S. Motocross Team tee and hat are officially available on the website.Grab yours ...
09/19/2026

The Levi Kitchen limited-edition AMA U.S. Motocross Team tee and hat are officially available on the website.

Grab yours and show your support for Levi and Team USA. 🇺🇸

Shop now online! Pro Circuit Racing

Address

2771 Wardlow Road
Corona, CA
92882

Opening Hours

Monday 8am - 5pm
Tuesday 8am - 5pm
Wednesday 8am - 5pm
Thursday 8am - 5pm
Friday 8am - 5pm

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