Car Driveline Clutch Kits, Driveshafts, & Flywheels for Sale MB11 HDG4 ACT Heavy Duty Race Sprung 4 Pad Clutch Kit Advanced ACT Heavy Duty Race Sprung 4 Pad Clutch Kit Chrysler Conquest (87) (MS1 HDG4) ACT Clutch Kit Dodge Challenger 5.7L 6.4L V8 (2011) Twin Disc MaXX X On Sale! Monkeywrench Racing. ACT HD Race Sprung 4 Pad Kit MS1 HDG4 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 spring centered race disc features a spring center to properly damp torsional vibrations for quieter operation and resist failure even under harsh conditions. ACT spring retainers utilize wraparound spring windows and thicker retainer stampings to provide spring support, reduce stress concentrations, and increase strength and reliability. With the 4 pad spring centered race disc, engagement is harsher, but shifting is faster. ACT's 4 pad spring centered race disc is well suited for smaller disc sizes in smaller engines. Features Product Weight (lbs.): 15. 7 Torque Capacity (ft lbs.): 420 Torque Capacity Over OE: 0. 72 Pilot Bushing Included: Yes Pressure Plate Type: Heavy Duty Release Bearing Included: Yes Clutch Disc Diameter (in.): 9. 4 Clutch Disc Diameter (mm): 240 Disc Material: Ceramic Input Spline Quantity: 23 Input Shaft Diameter (in.): 1 Alignment Tool Included: Yes Applications 1987 1989 Chrysler Conquest 1987 1989 Mitsubishi Starion What's In The Box? Clutch Friction Disc (4240208) Clutch Alignment Tool (AT03) Clutch Pressure Plate (MZ010) Clutch Pilot Bearing (PB1002) Clutch Release Bearing (RB422) References Installation Instructions Warranty Manufacturer 1 Year Warranty