This Straightline Performance torsional black secondary spring is built for the QRS secondary clutch on select Ski-Doo snowmobiles, keeping consistent pressure through shifts so acceleration and backshift stay smooth. The torsional design delivers improved backshift, smooth clutch operation, and sharper throttle response in demanding conditions.

Made for durability, precision, and consistent tension, it drops into QRS secondary setups and holds its tension when the ride gets rough.