ACT
ACT 2004 Mazda RX-8 HD/Perf Street Sprung Clutch Kit - ZM8-HDSS
- SKU:
- ACTZM8-HDSS
- UPC:
- 837055002778
- MPN:
- ZM8-HDSS
- Availability:
- Regularly stocked product
Description
How do I know if this clutch kit is compatible with my vehicle?
Confirm fitment with your vehicle by entering your specific make, model, and year into our compatibility checker for accurate results.
Can I install this clutch kit myself?
Professional installation is recommended to ensure precise alignment and optimal performance of your Clutch Kits - Single.
ACT HD/Perf Street Clutch Kits deliver maximum clutch life and consistent performance for Street Performance applications, scoring an 8/10. Featuring ACT's most popular Heavy Duty pressure plate and an exclusive diaphragm design, these Clutch Kits - Single provide confident engagement and superior power transfer for exhilarating acceleration.
What Owners Say
Owners and enthusiasts consistently praise the ACT Heavy Duty clutch kit for its significantly improved torque capacity and immediate, aggressive engagement that really grabs compared to stock. The pedal feel is noticeably heavier but manageable, though drivers warn the quick engagement point takes adjustment to avoid jerky starts and stalling. Break-in requires patience—some report needing over 2,000 miles before the "lightswitch" feel smooths out. A common criticism is the noise level, particularly on naturally aspirated builds where some suggest it may be overkill. Despite the learning curve, the consensus points to a durable, performance-oriented clutch that delivers substantially increased holding power for modified street and track applications.
Key Features
- ACT's most popular Heavy Duty pressure plate
- most popular street disc
- exclusive diaphragm design to increase clamp load
- reduce deflection and maximize clutch life
- four-stage, heat-treating process
- precision cover stampings to provide rigidity and consistency
Why Choose the ACT HD/Perf Street Clutch Kits
Delivers confident engagement and superior power transfer for exhilarating acceleration.
Achieves smoother shifts and a more responsive pedal feel for precise control.
Provides exceptional durability and extended clutch life for long-term performance.
Transforms your driving experience with a robust and reliable clutch system.
Who Is This For?
Street Performance — 9/10
Premium organic materials, high copper content, increased clamp load.
Track / Autocross — 8/10
Consistent performance, increased clamp load, reduced deflection.
Drag Racing — 7/10
Increased clamp load, consistent performance, heat-treated lining.
Daily Driving Comfort — 6/10
Most popular street disc, designed for clutch life.
Racing Competition — 8/10
Heavy duty pressure plate, consistent performance, heat-treated.
Engine Performance — 5/10
Designed for increased clamp load, supports engine power.
Frequently Asked Questions
How do ACT HD/Perf Street Clutch Kits improve acceleration and power transfer?
Enhanced acceleration and superior power transfer are delivered through ACT's most popular Heavy Duty pressure plate and the exclusive diaphragm design. This setup achieves a 9/10 score for 'Street Performance' by utilizing premium organic materials with high copper content to ensure confident engagement.
Is professional installation of an ACT HD/Perf Street Clutch Kit recommended?
Professional installation is recommended for ACT HD/Perf Street Clutch Kits to ensure optimal performance and longevity. Confirmation with a qualified technician is advised to guarantee proper setup and integration within your vehicle's drivetrain.
What driving experiences are ACT HD/Perf Street Clutch Kits best suited for?
These clutch kits are best suited for drivers seeking enhanced drivetrain performance for spirited driving and occasional track use, achieving an 8/10 score for 'Track/Autocross' and 'Racing Competition'. The consistent performance and reduced deflection from the exclusive diaphragm design maximize clutch life.
Is upgrading to an ACT HD/Perf Street Clutch Kit from a stock clutch beneficial?
Upgrading to an ACT HD/Perf Street Clutch Kit is beneficial due to its exclusive diaphragm design that increases clamp load and reduces deflection. This technical advantage provides a more robust and reliable clutch system, transforming your driving experience with superior power transfer.
What is the expected clutch life and performance consistency with an ACT HD/Perf Street Clutch Kit?
Maximum clutch life and consistent performance are achieved through ACT's exclusive diaphragm design and a four-stage, heat-treating process for the clutch components. This design provides exceptional durability, supporting the performance needs for spirited driving and occasional track use.
Important Notices
⚠️ Proposition 65 Warning: This product can expose you to chemicals including lead and/or other substances known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.
Browse More: Shop All Clutch Kits - Single — Drivetrain
Additional Information
Clearance Item: |
N |
MPN: |
ZM8-HDSS |
Proposition 65: |
Y |
Case Lot Quantity: |
1 |
Category: |
Drivetrain>Clutch Kits - Single |
Product Level: |
Premium Performance |
Street Performance: |
9/10 |
Track / Autocross: |
8/10 |
Drag Racing: |
7/10 |
Daily Driving Comfort: |
6/10 |
Racing Competition: |
8/10 |
Engine Performance: |
5/10 |
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