Replace the weak stock rear wheels on your Polaris and Ski-Doo suspension with the MTNTK Performance Tough Wheel Kit. This kit is machined to fit properly and completely replaces the flimsy stock wheels with a robust, heavy-duty wheel kit with bridged center hub that is totally bolt on, easy to install, and fits perfectly in the stock location. Ski-Doo Tough Wheel Kit comes with new 3/8" bolt that is 25% stronger than stock. Polaris models are a 7.5" Wheel and Ski-Doo is 8". Ski-Doo wheels will fit on Polaris models if you are running aftermarket rails or rail extensions to allow the use of 8" wheels.