Since the exhaust valves open at such a high rpm on the carbureted models the mid-range power is sacrificed dramatically compared to the EFI models

A must have for running high boost tunes

far exceeding the factory specifications:

Look at the main PV3 Product page of your model for available tunes

Having trouble finding pistons for your ET 900 motor

SNYPR Clutch Weights - Ski-Doo 850 Turbo Comp - 65-102 Gram Category_Default Category/SLED/Polaris/600 Race Sled/Miscellanous Since the exhaust valves openOur SNYPR Clutch Weights are designed for superior performance and tunability. With a weight range of 65 to 102 grams, these weights use magnets, set screws, and tungsten slugs to be hyper adjustable. This flexible weight profile provides better acceleration and a higher top speed.