ACT ZM8-HDR4 HD/Race Clutch Kits - ACT 2004 Mazda RX-8 HD/Race Rigid 4 Pad Clutch Kit for a 2004-2007 Mazda RX-8 Base, 2005-2005 Mazda RX-8 Shinka, 2008-2008 Mazda RX-8 40th Anniversary Edition, 2008-2009 Mazda RX-8 Touring, 2008-2011 Mazda RX-8 Grand Touring, 2008-2011 Mazda RX-8 Sport and 2009-2011 Mazda RX-8 R3.
Manufacturer: ACT
Product: ACT HD/Race Clutch Kits
Part Number: ZM8-HDR4
UPC: 837055002792
MSRP: $603.00
$488.00
Free Shipping (Continental US)
New with manufacturer warranty
Availability:
IN STOCK - LOW
WAREHOUSE (East: 1)
Generally ships within 1 business day.
WAREHOUSE (East: 1)
Generally ships within 1 business day.
Have a question regarding this product? Contact us.
Fitment:
NOTES: ACT 2004 Mazda RX-8 HD/Race Rigid 4 Pad Clutch Kit
| Years | Make | Model | Trim | ||
|---|---|---|---|---|---|
| 2004 - 2007 | Mazda | RX-8 | Base | ||
| 2005 - 2005 | Mazda | RX-8 | Shinka | ||
| 2008 - 2008 | Mazda | RX-8 | 40th Anniversary Edition | ||
| 2008 - 2009 | Mazda | RX-8 | Touring | ||
| 2008 - 2011 | Mazda | RX-8 | Grand Touring | ||
| 2008 - 2011 | Mazda | RX-8 | Sport | ||
| 2009 - 2011 | Mazda | RX-8 | R3 |
Description:
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% clamp load tested and dynamically computer balanced for smooth high RPM reliability. HD/Race Rigid 4 Pad.
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.
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.
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OUT OF STOCK
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2008-2009 Mazda RX-8 Touring
2008-2011 Mazda RX-8 Sport
2005-2005 Mazda RX-8 Shinka
2009-2011 Mazda RX-8 R3
2008-2011 Mazda RX-8 Grand Touring
1988-1988 Mazda RX-7 10th Anniversary
1986-1987 Mazda RX-7 Base
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1989-1990 Mazda RX-7 GTUs
1986-1990 Mazda RX-7 GXL
1987-1990 Mazda RX-7 GXL 2+2
1987-1987 Mazda RX-7 LX
1987-1987 Mazda RX-7 LX 2+2
1988-1988 Mazda RX-7 SE
1988-1988 Mazda RX-7 SE 2+2
1987-1987 Mazda RX-7 Sport
1986-1991 Mazda RX-7 Turbo
2008-2008 Mazda RX-8 40th Anniversary Edition
2008-2009 Mazda RX-8 Touring
2008-2011 Mazda RX-8 Sport
2005-2005 Mazda RX-8 Shinka
2009-2011 Mazda RX-8 R3
2008-2011 Mazda RX-8 Grand Touring
1988-1988 Mazda RX-7 10th Anniversary
1986-1987 Mazda RX-7 Base
1991-1991 Mazda RX-7 Base
1987-1987 Mazda RX-7 Base 2+2
1988-1991 Mazda RX-7 Convertible
2004-2007 Mazda RX-8 Base
1989-1990 Mazda RX-7 GTUs
1986-1990 Mazda RX-7 GXL
1987-1990 Mazda RX-7 GXL 2+2
1987-1987 Mazda RX-7 LX
1987-1987 Mazda RX-7 LX 2+2
1988-1988 Mazda RX-7 SE
1988-1988 Mazda RX-7 SE 2+2
1987-1987 Mazda RX-7 Sport
1986-1991 Mazda RX-7 Turbo
2008-2008 Mazda RX-8 40th Anniversary Edition
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SHIPS FROM MANUFACTURER
Shipping times vary by Manufacturer
(Can take days or weeks, contact us for an ETA)
Shipping times vary by Manufacturer
(Can take days or weeks, contact us for an ETA)
2008-2008 Mazda RX-8 Touring
2008-2008 Mazda RX-8 Sport
2005-2005 Mazda RX-8 Shinka
2008-2008 Mazda RX-8 Grand Touring
2004-2007 Mazda RX-8 Base
2008-2008 Mazda RX-8 40th Anniversary Edition
2008-2008 Mazda RX-8 Sport
2005-2005 Mazda RX-8 Shinka
2008-2008 Mazda RX-8 Grand Touring
2004-2007 Mazda RX-8 Base
2008-2008 Mazda RX-8 40th Anniversary Edition
ACT HD/Race Clutch Kits ZM8-HDR6
ACT 2004 Mazda RX-8 HD/Race Rigid 6 Pad Clutch Kit
IN STOCK (3)
SHIPS FROM MANUFACTURER
(Last checked: 02/13/2026)
Shipping times vary by Manufacturer
(Can take days or weeks, contact us for an ETA)
SHIPS FROM MANUFACTURER
(Last checked: 02/13/2026)
Shipping times vary by Manufacturer
(Can take days or weeks, contact us for an ETA)
2008-2011 Mazda RX-8 Sport
2005-2005 Mazda RX-8 Shinka
2009-2011 Mazda RX-8 R3
2008-2011 Mazda RX-8 Grand Touring
2004-2007 Mazda RX-8 Base
2008-2008 Mazda RX-8 40th Anniversary Edition
2008-2009 Mazda RX-8 Touring
2005-2005 Mazda RX-8 Shinka
2009-2011 Mazda RX-8 R3
2008-2011 Mazda RX-8 Grand Touring
2004-2007 Mazda RX-8 Base
2008-2008 Mazda RX-8 40th Anniversary Edition
2008-2009 Mazda RX-8 Touring
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IN STOCK
2005-2005 Mazda RX-8 Shinka
2004-2005 Mazda RX-8 Base
2004-2005 Mazda RX-8 Base

