Chain size 420 17mm 15 Tooth Engine Sprocket
Inner diameter: 17mm (Important to confirm the size before purchasing. Refer to the third picture. As a useful hack, if you cannot pass a US penny through the center of the sprocket, it should be a 17mm ID. A penny will not pass through a 17mm ID sprocket.)
Fits 420 chain
Screw hole spacing: 30mm
Replacement for many Chinese 50cc 70cc 90cc 110cc ATVs and pit dirt bikes
Made of 45# corrosion-resistant heat-treated steel for durability and long life
Features and Benefits:
Confirm the correct fit for your motorcycle with our chain size 420 17mm engine sprocket.
Easy to install with a screw hole spacing of 30mm and compatible with many Chinese 50cc 70cc 90cc 110cc ATVs and pit dirt bikes.
Durability and longevity are ensured with our sprocket made of 45# corrosion-resistant heat-treated steel.
Adjust Your Torque and Top Speed Performance:
Want more low end torque for pulling or climbing? Use a smaller engine sprocket. The smaller the front sprocket, the more torque you will have, with a drop in top speed.
Want more top speed? Use a larger engine sprocket. The larger the front sprocket, the more top speed you will have, with a drop in low end torque.
Easy to Install:
Our engine sprocket includes a retaining bracket and 2 new bolts, so you can quickly and easily upgrade or replace your current sprocket without any complications.
Compatibility:
Whether you have a 50cc, 70cc, 90cc, 110cc ATV or pit dirt bike, our engine sprocket is the perfect replacement for many Chinese-made models. So you can easily upgrade or repair your motorcycle or ATV without any hassle.