Advanced Clutch HD/Perf Street Rigid Kit (DN4-HDSD) PPE_CeramicCoating_2 spring-centered disc is recommended for

spring-centered disc is recommended for larger clutch sizes to absorb more heat

Fits with stock and most aftermarket mufflers

Tube lengths and diameters are increased coming together into a ported 4-1 parallel merge collector

Improved Fuel Efficiency: The increased efficiency in exhaust flow can contribute to improved fuel economy under certain driving conditions

1 yr warranty

Advanced Clutch HD/Perf Street Rigid Kit (DN4-HDSD) PPE_CeramicCoating_2 spring-centered disc is recommended forDN4 HDSD 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. The ACT performance street rigid hub discs feature premium organic materials with