The ACT ZM2-HDSS Heavy Duty Performance Street Sprung Clutch Kit pairs ACT's most popular Heavy Duty pressure plate with ACT's most popular street disc. The Heavy Duty pressure plate uses an exclusive diaphragm design to increase clamp load and reduce deflection, with every diaphragm undergoing ACT's four-stage heat-treating process and precision cover stampings for rigidity and consistency. The Performance Street disc uses premium organic friction material with high copper content for improved heat transfer and a steel-backed lining for greater burst strength and durability, with reduced marcel for faster shift action alongside the Heavy Duty pressure plate.
WarrantyInstallation Instructions
Specifications:
- Pressure Plate: ACT Heavy Duty, four-stage heat-treated diaphragm
- Disc: Performance Street, organic friction material, high copper content
- Disc Backing: Steel-backed lining, reduced marcel for faster shift action
- Includes: Pressure plate, street disc, alignment tool (pilot bearing and release bearing included on some applications)
- Recommended Use: Street and performance driving
- Part Number: ZM2-HDSS
Vehicle Applications:
- 1990 Mazda Miata Base
- 1991 Mazda Miata Base
- 1991 Mazda Miata SE
- 1992 Mazda Miata Base
- 1993 Mazda Miata Base
- 1993 Mazda Miata LE
- 1994 Mazda Miata Base
- 1994 Mazda Miata M Edition
- 1995 Mazda Miata Base
- 1995 Mazda Miata M Edition
- 1996 Mazda Miata Base
- 1996 Mazda Miata M Edition
- 1997 Mazda Miata Base
- 1997 Mazda Miata M Edition
- 1997 Mazda Miata STO
- 1999 Mazda Miata Base
- 1999 Mazda Miata 10th Anniversary
- 2000 Mazda Miata Base
- 2000 Mazda Miata LS
- 2000 Mazda Miata SE
- 2001 Mazda Miata Base
- 2001 Mazda Miata LS
- 2001 Mazda Miata SE
- 2002 Mazda Miata Base
- 2002 Mazda Miata LS
- 2002 Mazda Miata SE
- 2003 Mazda Miata Base
- 2003 Mazda Miata LS
- 2003 Mazda Miata SE
- 2003 Mazda Miata Shinsen
- 2004 Mazda Miata Base
- 2004 Mazda Miata LS
- 2004 Mazda Miata Mazdaspeed
- 2005 Mazda Miata Base
- 2005 Mazda Miata LS
- 2005 Mazda Miata Mazdaspeed
Note: ACT's own fitment data does not list a 1998 model year for this application; the table above reflects ACT's confirmed years exactly as published.
Warning: This product can expose you to chemicals including carbon black, glass wool fibers, or silica (in clutch discs), chromium and nickel, which are known to the State of California to cause cancer or birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov
FAQ
Why does the confirmed fitment list skip the 1998 model year?
ACT's own published fitment data does not include a 1998 model year for this kit; the Vehicle Applications list above reflects ACT's confirmed years exactly as published, without any years added or assumed.
Is this kit suited for daily street driving?
Yes. The Performance Street disc's organic friction material and reduced marcel provide smooth, quieter engagement suited to daily use, paired with the added clamp load of the Heavy Duty pressure plate.
Does the kit include a pilot bearing and release bearing?
Pilot bearing and release bearing are included on applications where the vehicle requires them.
Does this kit fit the 2004 Mazdaspeed Miata?
Yes, the ZM2-HDSS covers the 2004-2005 Mazdaspeed trim along with Base, LE, LS, M Edition, SE, Shinsen, STO, and 10th Anniversary trims across the confirmed 1990-2005 fitment range.
