Our technicians are the industry's clutching specialists, racing and riding with our products year round. They know snowmobile and ATV drivelines inside and out - clutches, chains, sprockets, helixes, u-joints and more. And they test and use all the major brands - Polaris, Arctic Cat, Ski-Doo, Yamaha, Kawasaki, Suzuki & Honda. So, when it comes to snowmobile & ATV performance, our techs have the answers.

We plan on regularly presenting technical tips for snowmobiles and ATV's. See the list on the left for our current Tech Tips archive list. Select any tip in the list to view it. Feel free to print these Tech Tips out to save for future use, or check back here regularly to view new tips as they are added.

Remember, these are strictly Tech Tips. Feel free to contact our technicians directly with any part-specific, or application-specific questions.  Call 218-829-6036 for assistance.

Tech Tip #3:  Sprockets and Chains - Sizes and Styles

The easiest way to find out what size sprocket you have is to count the number of teeth on the outside diameter. This is called your tooth size. Sprocket width can normally be checked by counting the number of plates across the chain including the outside plates. The number of plates across equals the sprocket and chain width.

If you don't have a chain to count, 11 wide sprockets measure .530", 13 wide = .640", 15 wide = .750", and 3/4 HYVO = .660" on the flat surface or 1.00" total width with hub.

On 98 and newer Polaris snowmobiles, there is a new style of chain and sprocket called 3/4 wide HYVO. HYVO sprockets and chains are not interchangeable with any other style.

Chain length can be figured out by counting the outside plates on one side and multiplying that number by two. For example, if you count 36 outside plates, 36x2=72, you would have a 72 length chain.