HD/Race Rigid 4-Pad Transmission Clutch Kit Fits Select Ford/Lincoln/Mercury/Mazda

Name: HD/Race Rigid 4-Pad Transmission Clutch Kit Fits Select Ford/Lincoln/Mercury/Mazda
Brand: ACT CLUTCH
SKU: 054-ZM12-HDR4
Price: 489.60 USD
Availability: InStock

^$489⁶⁰$544.00You Save$54.40

Ships on 09/23/2026

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Ford/Lincoln/Mercury/Mazda

HD/Race Rigid 4-Pad Transmission Clutch Kit

Fits Select Ford/Lincoln/Mercury/Mazda

See Below for Fitment and Details

ACT Clutch ZM12-HDR4 Features:
ZM12-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.
- Includes Clutch Friction Disc (4224005), Clutch Alignment Tool (AT05), Clutch Pressure Plate (MZ029), Clutch Pilot Bearing (PB1030), Clutch Release Bearing (RB110)
- Light To Moderate Pedal Effort
- Aggressive Engagement
- Increased Gear Rattle; Moderate Friction Life
- Extended by ACT's Exclusive Diaphragm Design
- Rigid Design May Increase Spline Wear; Carefully Engineered
- Precisely Assembled
- Accurately Balanced
- Uses Select Ceramic Friction Materials For High Heat Tolerance And Maximum Performance; Recommended For Race Use Only; 100-percent Clamp Load Tested And Dynamically Computer Balanced For Smooth High Rpm Reliability
- Weight: 25.4 lbs.
- Torque Capacity: 399 ft.-lbs.
- Torque Capacity Over OE: 87-percent
- Pilot Bushing: Yes
- Pressure Plate Type: Heavy-Duty
- Release Bearing: Yes
- Clutch Disc Diameter: 8.8 in.
- Clutch Disc Diameter: 224 mm
- Disc Material: Ceramic
- Input Spline Quantity: 22
- Input Shaft Diameter: 0.9375 in.
- Alignment Tool Included: Yes
ACT Clutch ZM12-HDR4 Notes:
- 225mm upgrade. Must use ACT 600870 flywheel (not included in kit) or a modified OE flywheel. 600870 flywheel is compatible with the OE clutch kit as well as an ACT clutch kit. Flywheel sold separately from clutch kits.