Pro Circuit
One-time desert racing pro and motor tuning specialist Mitch Payton, founded Pro Circuit in 1978 at the age of 18.
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 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.

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