Product DescriptionNot made in China! Made from High Carbon Steel SAE 1045/49/SCM415. Fits 420 Chain. See picture for exact measurements. Check your current tooth count before ordering. Larger size sprockets in the rear give you more take off power with less top speed. Smaller rear sprockets give you more top end speed with a slower take off. Larger rear sprocket may require removal or modification of chain and sprocket guard. This is one of two rear sprockets found on some Coolster units. Use the mounting diameter to determine. Other size may be available, including 32 tooth and 41 tooth, email for details. We can also custom cut any size you need.
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went up a tooth size from stock 41 to a 42....little more tork and not much difference in top end speed.
went up a tooth size from stock 31 to a 32....little more tork and not much difference in top end speed.
The product works great and specs were exact fit. Fast delivery. And as always the best customer service with the guys at whygostock.