ACT ZX2-HDSS Heavy Duty Performance Street Sprung Clutch Kit for Mazda RX-7

ZX2-HDSS kit features ACT's most popular Heavy Duty pressure plate and most popular street disc. 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 Performance Street discs feature premium organic materials with high copper content for better heat transfer and steel-backed lining for greater burst strength and durability. These discs have reduced marcel for faster shift action to complement ACT pressure plates, with increased strength and reliability. HD/Perf Street Sprung Light to moderate pedal effort, smooth positive engagement, OE to mild gear rattle; Longer friction life, extended by ACT's exclusive diaphragm design; Carefully engineered, precisely assembled, accurately balanced, with premium organic friction materials for heat tolerance and reduced fade; Recommended for street and race use; 100% clamp load tested and dynamically computer balanced for smooth high RPM reliability

• "Excellence in Performance", backed by the best one-year warranty in the industry!

The ACT ZX2-HDSS Heavy Duty Performance Street Sprung Clutch Kit combines a high-clamp-load pressure plate with a premium organic street disc for responsive, dependable clutch performance. Designed for street and race applications, this kit delivers smooth, positive engagement with light to moderate pedal effort while improving friction life, heat tolerance, and high-RPM reliability.

ACT Heavy Duty pressure plates feature an exclusive diaphragm design that increases clamp load, reduces deflection, and helps maximize clutch service life. Each diaphragm undergoes a four-stage heat-treating process, while precision cover stampings provide rigidity and consistent operation. The included Performance Street sprung disc uses high-copper-content organic friction material for improved heat transfer, steel-backed linings for added burst strength, and reduced marcel for faster shift action.

The ZX2-HDSS is carefully engineered, precisely assembled, accurately balanced, and 100% clamp-load tested. Its design supports smooth engagement with OE-like to mild gear rattle characteristics, making it a practical upgrade for performance-oriented street vehicles and moderate race use. The kit is engineered for select 1983–1985 Mazda RX-7 applications; verify the vehicle configuration and transmission compatibility before installation. ACT backs this performance clutch kit with its industry-leading one-year warranty.

Key Product Specifications & Technical Data

• Brand: ACT
• Part Number: ZX2-HDSS
• Clutch Type: Heavy Duty pressure plate with performance street sprung disc
• Friction Material: Premium organic lining with high copper content
• Disc Design: Sprung hub with reduced marcel for quick shift action
• Application: Street and race use
• Performance Characteristics: Light to moderate pedal effort with smooth, positive engagement
• Testing and Balance: 100% clamp-load tested and dynamically computer balanced

What's Included

• ACT Heavy Duty pressure plate
• ACT Performance Street sprung clutch disc

Features:

• Heavy Duty Pressure Plate: ACT's exclusive diaphragm design increases clamp load, reduces deflection, and helps extend clutch life.
• Heat-Treated Diaphragm: A four-stage heat-treating process supports consistent performance and durability.
• Premium Organic Disc: High-copper-content friction material improves heat transfer and resistance to fade.
• Fast, Smooth Engagement: Reduced marcel and a sprung hub provide positive engagement with light to moderate pedal effort and faster shift action.

Fitments:
1983 Mazda RX-7 GS
1983 Mazda RX-7 GSL
1983 Mazda RX-7 Limited Edition
1983 Mazda RX-7 S
1984 Mazda RX-7 GS
1984 Mazda RX-7 GSL
1984 Mazda RX-7 GSL-SE
1984 Mazda RX-7 S
1985 Mazda RX-7 GS
1985 Mazda RX-7 GSL
1985 Mazda RX-7 GSL-SE
1985 Mazda RX-7 S
1986 Mazda RX-7 Base
1986 Mazda RX-7 GXL
1987 Mazda RX-7 Base
1987 Mazda RX-7 Base 2+2
1987 Mazda RX-7 GXL
1987 Mazda RX-7 GXL 2+2
1987 Mazda RX-7 LX
1987 Mazda RX-7 LX 2+2
1987 Mazda RX-7 Sport
1988 Mazda RX-7 Convertible
1988 Mazda RX-7 GTU
1988 Mazda RX-7 GXL
1988 Mazda RX-7 GXL 2+2
1988 Mazda RX-7 SE
1988 Mazda RX-7 SE 2+2
1989 Mazda RX-7 Convertible
1989 Mazda RX-7 GTU
1989 Mazda RX-7 GTUs
1989 Mazda RX-7 GXL
1989 Mazda RX-7 GXL 2+2
1990 Mazda RX-7 Convertible
1990 Mazda RX-7 GTU
1990 Mazda RX-7 GTUs
1990 Mazda RX-7 GXL
1990 Mazda RX-7 GXL 2+2
1991 Mazda RX-7 Base
1991 Mazda RX-7 Convertible

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: t
Units Per Sku: 1