right - original IRL gear
left - CHI improved gear
Contour Performance Products, LLC is a wholly owned subsidiary of CHI that designs and invents gear schemes and complete power transmissions for high performance customers. CPP was formed to address the specific needs of the fast changing and demanding international performance market.
Whether it's purpose designed multi-speed sequential shift gearboxes for racing, custom or production vehicles, or quick change gear sets for open wheel dirt cars, CPP offers the strongest, lightest, most efficient and wear resistant drive train components available.
CPP has also developed a process to harden and strengthen the cylinder walls of engines used by NASCAR.
6-speed motorcycle racing transmission