Stock Optimized: Enhances the stock file with improved fan cooling and driveability limiters removed

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

this exhaust is designed to work perfectly with our Level 1 Slip-On Tune to unlock maximum potential and remove factory limiters

sell or give any of these engines/equipment to someone else

Pre-mix or oil injection

Primary Clutch Spring for Ski-Doo // 05-173-385 Category_Default Category/SLED/Polaris/IQ 600/Miscellaneous Stock Optimized: Enhances the stockPrimary 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