4 Puck Clutch Kit

• 2004-2011 Mazda | RX-8

ACT Heavy Duty Race Rigid 4 Pad Clutch Kit (ZM8-HDR4)

Note: Flywheel requires counterweight (flywheel and counterweight sold separately or with flywheel kit). Must use ACT counterweight with ACT flywheel.

ZM8-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.

Kit contents

• MZ010 - ACT Heavy Duty Clutch Pressure Plate
• 4240008 - ACT 4 Pad Rigid Race Clutch Disc
• RB110 - ACT Clutch Release Bearing
• AT03 - ACT Clutch Alignment Tool
• PB1013 - ACT Clutch Pilot Bearing

Specifications

• Product weight (lbs.): 14.1
• Torque capacity (ft/lbs.): 420
• Torque capacity over OE: 72%
• Disc material: Ceramic
• Clutch disc diameter (in.): 9.4
• Clutch disc diameter (mm): 240
• Input shaft diameter (in.): 1
• Pressure plate type: Heavy Duty
• Warranty: 12 months

Characteristics

• 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

Fitment

• 2004-2011 Mazda RX-8 (Base 2004-2007; Shinka 2005; 40th Anniversary 2008; GS, Touring 2008-2009; GT, Grand Touring, Sport 2008-2011; R3 2009-2011)

Q: Best race clutch kit for a 2004-2011 Mazda RX-8?
A: The ACT ZM8-HDR4 Heavy Duty Race Rigid 4 Pad Clutch Kit is recommended for race use only and fits the 2004-2011 Mazda RX-8 (Base 2004-2007; Shinka 2005; 40th Anniversary 2008; GS, Touring 2008-2009; GT, Grand Touring, Sport 2008-2011; R3 2009-2011).

Q: Does the ACT ZM8-HDR4 need a flywheel counterweight on a 2004-2011 Mazda RX-8?
A: Yes. The flywheel requires a counterweight (flywheel and counterweight sold separately or with flywheel kit). You must use the ACT counterweight with the ACT flywheel.

Q: What comes in the ACT ZM8-HDR4 clutch kit for a 2004-2011 Mazda RX-8?
A: It includes MZ010 - ACT Heavy Duty Clutch Pressure Plate; 4240008 - ACT 4 Pad Rigid Race Clutch Disc; RB110 - ACT Clutch Release Bearing; AT03 - ACT Clutch Alignment Tool; PB1013 - ACT Clutch Pilot Bearing.

Q: Is the ACT ZM8-HDR4 clutch kit meant for street or race use on a 2004-2011 Mazda RX-8?
A: Recommended for race use only. Feel: light to moderate pedal effort, aggressive engagement, increased gear rattle.

Q: How much torque does the ACT ZM8-HDR4 hold vs a stock 2004-2011 Mazda RX-8 clutch?
A: 420 ft/lbs. torque capacity, 72% over OE.

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