ACT 1990 Nissan 300ZX HD/Race Rigid 4 Pad Clutch Kit - NX6-HDR4 fits_1972-1978`Mazda`RX-3 FRONT REAR SPRING RATES 12k

FRONT REAR SPRING RATES 12k 20k

Enhances braking efficiency by limiting unwanted axle movement under load

3 JTDM Replacement Panel Air Filter

Gloss black center slats (non-recycled ABS)

12 CFM increase

ACT 1990 Nissan 300ZX HD/Race Rigid 4 Pad Clutch Kit - NX6-HDR4 fits_1972-1978`Mazda`RX-3 FRONT REAR SPRING RATES 12kNX6 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