This modification requires a tune or fuel controller

FACTORY 9R POLARIS PISTONS

Fits all E-Tec 850 Gen 5 Chassis

Available in bare stainless or ceramic coated to help hold more heat into the exhaust and keep underhood temps down

Primary Clutch STM Rage 3 / Defender - X3 - Commander - maverick Category_Default Category/SLED/Clutching This modification requires a tuneCompletely redesigned STM Rage 3WCP Primary clutch features a wider, thicker, more durable spider with our new composite spider roller bushings for long life. The new design utilizes a captured pin with set screws for maximum durability and ease of use. Along with the new captured pin design we have all new composite cam arm bushings for long life in harsh environments. We have also added a finned fixed sheave for added air flow and cooler operation.