STM Primary Springs for 121mm Spring STM Slipper Clutches

Springs Wear out, It happens...So now you can replace yours! Even better...You can change out the Spring to change the Feel and Action of the Clutch. The Primary Spring Regulates how much Effort it takes to make the Clutch Work.To determine what you need, check the Part Number engraved on your spring

Availability Notice: Supplier inventory for this item can change frequently. Please contact DucShop to confirm current availability before placing your order.

Ducshop internal product code: BL.