Pro Circuit

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 trav

eled 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.

07/06/2026

🚨Now Available🚨

Pro Circuit Yamaha Triple Clamp kits πŸ‘Š

Upgrade your ride. Order online or call the shop. πŸ“²

07/03/2026

Item of the Week πŸ‡ΊπŸ‡Έ

Give your bike the factory finish with our Red, White & Blue American Flag Exhaust Decals.

The perfect upgrade before 4th of July. Available now. πŸ’₯

A week to remember in Mammoth. πŸ†12 class wins. Countless motos. Pro Circuit riders got the job done all week long.πŸ† – 30...
06/30/2026

A week to remember in Mammoth. πŸ†

12 class wins. Countless motos. Pro Circuit riders got the job done all week long.

πŸ† – 30+ Pro
πŸ†.66 – Supermini 1 & Supermini 2
πŸ†.96 – Mini Sr 1 & Mini Sr Open
πŸ† – 250 B, 250 B/C Open & Schoolboy 2 B/C
πŸ† – 450 Pro & Open Pro
πŸ†.davis_508 – FMF Two Stroke
πŸ† – Women (12+)

06/26/2026

Item of the Week πŸ”₯

Pro Circuit Ti-4 System for Suzuki RM-Z450.

Grab one while you can!

A track day essential. β˜‚οΈPro Circuit umbrellas are available online or in the shop. Pick yours up today.
06/25/2026

A track day essential. β˜‚οΈ

Pro Circuit umbrellas are available online or in the shop. Pick yours up today.

Early mornings, late nights, endless miles.Happy Father's Day to the dads who never miss a gate drop. πŸ‘ŠπŸ’š
06/21/2026

Early mornings, late nights, endless miles.
Happy Father's Day to the dads who never miss a gate drop. πŸ‘ŠπŸ’š

06/19/2026

πŸ”₯ Item of the Week πŸ”₯

Our Red Carbon End Cap is up for grabs.

Every purchase enters you for a chance to win a signed red plate from Seth Hammaker or Levi Kitchen. πŸ”΄

Two lucky winners. Limited time. Don't miss out.

06/16/2026

The ultimate 2-stroke upgrade❗️

Pro Circuit Champ Stamp Works Pipe
Pro Circuit Ti-2 Silencer
Pro Circuit Triple Clamp

Upgrade your ride today.

06/12/2026

🚨Item of the week 🚨

KTM Works Pipe
Fits KTM 65 SX 1998-2001

Grab it while you can!

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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