T1RR-H04 race, twin disc kits are race-ready for the serious enthusiast who needs a direct bolt-in kit, requiring no additional modifications. ACT's sintered iron race discs offer the highest torque capacity of all ACT race discs and have ultra-high heat capacity. Most kits offer pedal loads 10-20% higher than stock, yet increasing the clamp load by 80-90%. All ACT twin disc kits include a CNC-machined and dynamically balanced flywheel for trouble free use. All kits undergo an exclusive four-stage, heat-treating process on all diaphragms. ACT twin disc kits include a pressure plate, two discs, floater, flywheel and alignment tool. Some kits may include a pilot bearing and release bearing. ACT Twin disc kits meet SFI Specification 1.2.