ACT Twin Disc Sintered Iron Race Clutch Kit | Acura Integra (90-91) (T1RR-H01)1990 1991 Acura Integra 1. 8L Twin Disc Sintered Iron Race Kit by ACT T1RR H01 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