Final & Primary Drive Parts & Kits
About Final & Primary Drive Parts & Kits
Final and primary drive parts are the belts, chains, sprockets and shafts that move power from the engine toward the wheels. Riders replace them because belts glaze, crack or lose width, chains stretch, sprocket teeth wear into hooks, and guides and sliders wear away.
The sub-categories divide the job. Final Drive Belts & Chains and Primary Drive Belts & Chains hold the drive belts and chains, Sprockets holds front and rear sprockets listed by tooth count, and Driveshafts & Parts holds shafts and joints. Guards & Guides, Drive Belt Pulleys & Tensioners and Other Belt, Chain & Sprocket Parts hold the supporting parts. A belt is chosen by its listed width and outside circumference, a chain by its size number and link count, and a sprocket by tooth count and by whether it is front or rear.
Brands in this category include D.I.D, Vortex, Bolt, EPI and Ultimax. For help reading chain numbers, see this chain size guide. The whole group is part of Transmission & Drivetrain. Pick your machine in the Ride Finder at the top of the page to see parts made for it.
FAQs on UTV and ATV belts, chains and sprockets
Why should a chain and sprockets be replaced together?
A worn chain wears the sprocket teeth, and worn sprockets in turn wear a new chain quickly. Fitting a new chain on old sprockets, or the reverse, shortens the life of both. Most riders replace the chain and both sprockets as a set.
What does the number on a chain, such as 520, mean?
The size number identifies the chain's pitch and width. The chain and both sprockets must use the same size to mesh properly, and listings give the number, such as 520 or 630, along with the link count. Check your old chain or manual.
How does changing sprocket size affect my machine?
A larger rear sprocket or a smaller front sprocket gives shorter gearing, which is quicker acceleration and lower top speed. The opposite gives taller gearing. A change in tooth count also changes the chain length you need, so check the chain and the clearances.
How do I know whether my machine has a belt or a chain final drive?
Sport quads usually use a chain and sprockets to the rear axle. Many UTVs and utility ATVs use a belt-driven CVT into a transmission, then shafts to the axles. Check your owner's manual or look at the machine before you order.
