ACT 1991 Mazda Miata HD/Race Rigid 4 Pad Clutch Kit spo-default Oversized Tube and Fin Core:

Oversized Tube and Fin Core: This BladeRunner Street Series Radiator features a 2-3/4" thick tube and fin core which provides greater heat dissipation and better coolant flow than the factory radiator for optimum cooling efficiency

This group of specialized kits retain full use of the OE parking brake

It is constructed with high quality T-304 stainless steel and carries the Borla(r) Million Mile Warranty

Includes Pro-Truck Lift Springs and Pro-Truck Sport Shocks

ACT 1991 Mazda Miata HD/Race Rigid 4 Pad Clutch Kit spo-default Oversized Tube and Fin Core:ZM2 HDR4 kit features ACT's most popular Heavy Duty pressure plate. ACT Heavy Duty pressure plates use exclusive diaphragm design to increase clamp load, reduce deflection and maximize clutch life. All diaphragms endure a four stage, heat treating process for unparalleled performance. ACT pressure plates have precision cover stampings to provide rigidity and consistency. ACT's 4 pad rigid race discs are made with high quality, ceramic friction