Developed for use with 2ZJ-GTE engine using G-Force transmission with 6.6" Input shaft, 1-1/8" x 26 GM spline, Quicktime bell housing #RM-4031 without block plate and Tilton Hydraulic Release Bearing # 61-400 Triple Disc XT/SI Race Kit Moderate to heavy pedal effort, predictable, quick engagement, quick throttle response, increased gear rattle; ACT's exclusive diaphragm, hardened posts and high heat capacity for long life under severe abuse, rigid design may increase spline wear; Carefully engineered, precisely assembled, accurately balanced, chromoly hub is heat-treated for strength and durability; Recommended for high horsepower race use only, not intended for street; 100% clamp load tested and dynamically computer balanced for smooth high RPM reliability T2R3-T01 race, triple 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. All ACT triple 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 triple disc kits include a pressure plate, three discs, two floaters, and flywheel. Some kits may include a pilot bearing and release bearing. ACT Triple disc kits meet SFI Specification 1.2.