2:1 compression ratio makes the motor detonation sensor kick on very easily and won’t allow you to lean out the motor for extra power

Proper break-in is critical to the performance and lifespan of your new big bore kit

The stock tensioner is hydraulic and is a known problem

Use with the stock pipe or our Fatt Azz single pipe (Fuel controller required with pipe)

Cyclone Clutch Cover/ S1 Category_Default Category/SXS/Polaris RZR/Ranger 900 '13-Up 2:1 compression ratio makes theCool your Polaris Snowmobile Belt with our cyclone clutch cover. Decrease belt temps up to 30 degrees to help keep your belt within correct operating temperature when adding performance. Replaces stock Polaris P85 clutch cover Maximizes cooling Fan blades were designed into the billet cover to effectively move air while increasing strength Decreases belt temp prolonging belt life Constant cooling directed on the primary clutch 40 50 Degree decrease in