The ACT ZM1-XTSS Xtreme Performance Street Sprung Clutch Kit pairs an ACT Xtreme pressure plate with ACT's most popular street disc for the most demanding drivers. The Xtreme 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, with reduced marcel for faster, quieter shift action alongside the Xtreme pressure plate.
WarrantyInstallation Instructions
Specifications:
- Pressure Plate: ACT Xtreme, 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: Demanding street and performance driving
- Part Number: ZM1-XTSS
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
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
How does the Xtreme pressure plate differ from the Heavy Duty pressure plate?
The Xtreme pressure plate is built for the most demanding drivers, using the same four-stage heat-treated diaphragm design as ACT's Heavy Duty line but tuned for higher clamp load.
Is this kit suited for daily driving?
Yes. The Performance Street disc's organic friction material and reduced marcel keep engagement smooth and quiet for street use, even paired with the stronger Xtreme 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 1993 Miata LE?
Yes, the ZM1-XTSS covers the 1990-1993 Miata Base along with the 1993 LE and 1991 SE trims.