<b>Centrifugal clutch designed to be used on one wheel karts with rear tires no larger than 15" tall, and engines 2hp-7hp. <br> Larger tires and live axles recommend using Torque-converter ( ASIN:B07T1KRS4V)</b><p><b>Specifications:</b><br> Clutch Bore: 3/4"<br> Sprocket: 10 teeth for #40/41/420 Chian<br> Clutch Dia: 107mm<br> Clutch Height: 55mm<br> Engagement Speed: 2300±300 RPM<br> Recommended Engine: 2HP - 7HP, 3/4" shaft with flat key<br> <b><br> Fitment:</b><br> 2 - 6.5hp Honda & Honda Cloned Engines GC160, GC190, GX120, GX140, GX160, GX200<br> Perfect For Go Kart Minibike Baja Mini Bike MB165 & MB200 (Baja Heat, Mini Baja, Baja Warrior)<br> Common clutch for 3.5-7hp engines using #40/41/420 chain<br> Briggs & Stratton and 2 - 6.5 HP With 3/4" Shaft<br> Tecumseh Engines 2 - 6.5 HP With 3/4" Shaft<br> <b><br> This Kit Includes:</b><br> 1x 10 teeth #40/41/420 chain centrifugal clutch<br> 1x #40/41/420 chain<br> <br> <b>Set Screws NOT Included. Mounts onto crankshaft using bolt and washer on the end of the crankshaft.</b><br> (Clutch does not need set screws as long as the end of the crankshaft is threaded to accept a bolt. Most go kart clutches are held onto the shaft with a bolt and larger washer. Extra washers if needed are used on the crankshaft to space clutch.)</p>