Features: 1.Common clutch for 8 h-p engines using #40/41/420 chain. Mounts onto crankshaft using bolt and washer on the end of the crankshaft. 2.Nice replacement for old or damage clutch of mini-bike. 3.Fit for: Go kart / mini bike / ATV / snowmobile. 4.Easy to install and maintain. 5.By the time most clutches wear out the chain is in need or replacing as well. A worn out chain will stretch, causing the rollers to ride on top of the teeth of the chain. Two things happen at this point you will prematurely wear down the teeth of the clu Specification: Feature:_x000D_ _x000D_ Common clutch for 8 h-p engines using #40/41/420 chain. Mounts onto crankshaft using bolt and washer on the end of the crankshaft. _x000D_ Easy to install and maintain. _x000D_ Nice replacement for old or damage clutch of mini-bike. _x000D_ Fit for: Go kart / mini bike / ATV / snowmobile. _x000D_ By the time most clutches wear out the chain is in need or replacing as well. A worn out chain will stretch, causing the rollers to ride on top of the teeth of the chain. Two things happen at this point you will prematurely wear down the teeth of the clutch as well as your drive sprocket and you will constantly have your chain come off the sprockets. _x000D_ _x000D_ Specification:_x000D_ Tooth: 10 teeth_x000D_ Chain type: 40/41/420_x000D_ Engine: 8 hp engine_x000D_ Aperture: 3/4"_x000D_ Fit for: go kart / mini bike / ATV / snowmobile_x000D_ Application: Chain wheel_x000D_ _x000D_ Package list:_x000D_ 1 * Engine Clutch_x000D_ _x000D_ Note:_x000D_ The actual product color may deviate from the photo due to light._x000D_ There may be a slight deviation in the measurement of product. PackageList: