Jack Chambers battled with Ryan Sipes in the 125 All Star race at the final round of the 2019 Lucas Oil AMA Pro Motocross Championship at Ironman Raceway. Chambers brought his KTM home in second place—watch the action from Chambers' perspective, via the Racer X GoPro.

ABOUT PRO CIRCUIT

Based in Corona, California, Pro Circuit Products, Inc. is a leader in off-road motorcycle and ATV exhausts and aftermarket performance parts. Started in 1978, Pro Circuit is the go-to shop for recreational riders and professionals for everything from suspension work to complete engine packages, and everything in between.

ABOUT NAMURA TECHNOLOGIES

Pistons and Gaskets Coming from decades of Powersports aftermarket manufacturing, Namura continues to impress riders and dealers alike with their aggressive development and innovative product design and manufacturing in MX and ATV Pistons and Gaskets. Based out of the suburbs of Minneapolis, Minnesota, Namura is taking piston quality and durability to another level.