if you add a performance pipe

These German-made Wossner pistons are nothing but the best

high-quality hose clamps to guarantee a tight

High altitude gains of 8-10 HP through the mid-range and 6-7 HP peak

two ring sets

Manual Cam Chain Tensioner / RZR & Ranger - 900 & 1000 Category_Default Category/SLED/Ski-Doo/XP 600 Race Sled if you add a performanceWe recommend this manual cam chain tensioner for every owner of a Polaris ProStar motor! The stock tensioner is hydraulic and is a known problem. Without the engine running or during startup, the stock cam chain tensioner has no tension and can allow your machine to jump time. This can cause major running issues and even motor failure. Protect your motor and install this manual tensioner today!