3/4" bore clutch, with 3/16 keyway.
#35 gear with 12 teeth
Engagement RPM: 2200
Rated up to 8HP

**There are many variables that play into the performance of a clutch. Tire size, rear sprocket size and rear drive set-up are a few of the main variables that could affect clutch performance. If you are using large tires or a small sprocket, your vehicle may require a belt drive system. Clutch performance is not based soley on the engine size.**