The R Clutch series line-up is our highest capacity clutch and is specifically designed for vehicles with a significant increase in engine power. OS Giken unique floating center hub design is built to withstand transmission shock and abuse from high-powered racecars. 

The R3B Clutch is specifically designed for vehicles with a significant increase in engine power and torque. It is capable of handling up to 800lbs ft of torque and immense amounts of heat. This clutch is often found in our competition drift and drag vehicles. OS Giken unique floating dampened center hub design is built to withstand transmission shock and abuse from high-powered racecars.