Tubeworks Dual Diaphram Heavy Duty Spring kit provides a more positive clutch feel and modulation, and doubles the clutch capacity to over 250 HP. If you have big horsepower this a must have accessory. In addition we highly recommend our patented TW Clutch Mod.
- TW Billet Clutch Retaining Ring
- Premium ARP Fasteners
- Additional heavy duty diaphram spring to stack on top of your OE Yamaha Spring
- Available for SS model *requires TW Actuator Modification