We also offer the option of a encapsulated helix design that keeps the driven from unloading

better belt grip

Pre-mix or oil injection

These German made Wossner pistons are nothing but the best

Why BMP Stainless

Primary Clutch Spring for Ski-Doo // 05-173-385 Category_Default Category/SLED/Polaris/IQ 600/Miscellaneous We also offer the optionPrimary Clutch Spring for Ski Doo 05 173 385 Elevate your Ski Doo's acceleration and performance with this high quality Primary Clutch Spring. Engineered for consistency and durability, this spring is essential for maximizing power transfer from the engine to the track. Precision Engineering Spring Rate: The rate of 173 385 provides an aggressive initial engagement (173 lbs) and a high finish rate (385 lbs) for strong upshifts and excellent belt