3/4" Shaft output Clutch Adapter

Product Description

Convert any 66/80cc or newer 85-110cc china 2t or any billet 2 stroke bicycle engine to accept 3/4"shaft gokart/minibike clutches aswell as pull start assemblies from 79-212cc 4 stroke engines.

Each kit includes a primary drive gear with a #35 chain, having a 9:19 gear ratio. By replacing the gear drive with a chain drive, scooter tops can benefit from the piston pin offset design, as it causes an improved engine performance due to reversal of engine direction. Resetting the ignition timing is necessary, and both KTM50 and Chinese ignition systems can be used in either direction with the correct magnet positioning. A timing light is required for any ignition system excluding Sallettra KTM50 ignitions, as they have timing lines available.

Output shaft will be 3/4" x 2.46" long, 3/16" keyway with a 5/16-25 threaded hole.

Starter assembly not included but are widely available for about $15.

Special billet "clutch"(primary drive) cover included to ensure a pull start can be fitted. 

This durable design features dual keys binding the sprocket and shaft, plus a thick walled spacer between the bearings. When all components are secured together, the sprocket, bearings and spacer work together to effectively increase the diameter of the shaft.rm 17mm to 24mm.

2x "6003zz" 17mmx35mmx10mm bearings are included along with spacers to adjust fine tune fitment.

0.47368421052 or 2.1111111 gear ratio!