The ACT Heavy Duty Pressure Plate is an excellent combination of increased torque holding and pedal feel for most daily driven cars. The HD pressure plate provides 35% increase in clamp loading while creating only a moderate increase in pedal feel thanks to ACT's special, single diaphragm design.
An ACT 4-Puck Sprung Hub Race Disc has very harsh engagement and is designed for road race cars only. A G4 friction surface has good durability and spline life characteristics under normal use. The sprung hub helps to reduce driveline shock and be relatively quiet compared to an unsprung hub but will definitely have chatter. The ACT G4 is SFI certified, so it is legal for all forms of racing that require SFI compliance. JSC does not recommend the G4 for
All sprung hub clutch kits require the ACT brand solid flywheel and will not work with the stock flywheel or other non-ACT solid flywheels. The HDMM clutch kit is a solid hub and is the only ACT clutch that will work with the stock Mini Cooper S flywheel.
This product was added to our catalog on Monday 15 February, 2010.