SB11-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 materials. The chrome-moly hub is heat-treated for strength and durability. The lightweight, rigid design allows for quicker shifts and smooth, trouble-free service. With the 4-pad rigid race disc, engagement is harsher, but shifting is faster. The 4-pad rigid race disc is well-suited for the smaller disc sizes in smaller engines.

Feel: Light to moderate pedal effort, aggressive engagement, increased gear rattle;

Life: Moderate friction life, extended by ACT's exclusive diaphragm design, rigid design may increase spline wear;

Quality: Carefully engineered, precisely assembled, accurately balanced, uses select ceramic friction materials for high heat tolerance and maximum performance;

Recommended Use: Recommended for race use only;

ACT Difference: 100% clamp load tested and dynamically computer balanced for smooth high RPM reliability;

Item Description

HD/Race Rigid 4 Pad

Product Weight (lbs.)

27.1

Torque Capacity (ft/lbs.)

574

Torque Capacity Over OE

78%

Disc Material

Ceramic

Friction Surface Diameter (Inches)

9.4

Friction Surface Diameter (mm)

240

Input Shaft Diameter (Inches)

1

Spline Count

24

Pad Quantity

4

Disc Type

Rigid Race Disc

Pressure Plate Type

Heavy Duty

Flywheel Included

600890

Flywheel Type

Streetlite

Flywheel Tooth Quantity

124

Flywheel Mounting Hole Quantity

8

Warranty

12 Months

NOTE: Conversion Kit. Replaces original 230mm clutch. Must use ACT flywheel (included in kit).

VIP Motorsport is an official UK stockist of ACT Clutches in the UK. Our stock is directly linked with ACT in the USA, if the item is out of stock with us it could take up to 2 working weeks to arrive with you. Contact us for definite stock.