This is a standard 40/41 chain clutch.This clutch is great for backyard use all the way to racing on black top. It has an engagement speed of 2300 to 2500 RPMs, which is perfect for drift trikes and small mini bikes. Different springs can be used for higher and lower engagements. It comes standard with a 40/41 chain 10 tooth sprocket (14 tooth sprocket available also).
We supply Tech Support to help you pick the proper clutch for your needs, and we also use a machined steel sprocket not iron for longer wear.