Khana Karts uses Max-Torque clutches tuned for our drift-kart application. Beyond their standard quality, this clutch sports a cut drum, wedge shoes, and custom springs. The selected springs allow for higher RPM engagement to initiate drifts with ease. And, engagement is smooth and predictable with the drum machined true. This clutch has a 10-tooth sprocket for #41/420 chain and 3/4" bore.