# ACT 2004 Mazda RX-8 HD/Race Sprung 4 Pad Clutch Kit

ZM8-HDG4 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 spring-centered race disc features a spring-center to properly damp torsional vibrations for quieter operation and resist failure even under harsh conditions. ACT spring retainers utilize wraparound spring windows and thicker retainer stampings to provide spring support, reduce stress concentrations, and increase strength and reliability. With the 4-pad spring-centered race disc, engagement is harsher, but shifting is faster. ACT's 4-pad spring-centered race disc is well-suited for smaller disc sizes in smaller engines.

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

This Part Fits:

Year

Make

Model

Submodel

2008

Mazda

RX-8

40th Anniversary Edition

2004-2007

Mazda

RX-8

Base

2008-2011

Mazda

RX-8

Grand Touring

2009-2011

Mazda

RX-8

R3

2005

Mazda

RX-8

Shinka

2008-2011

Mazda

RX-8

Sport

2008-2009

Mazda

RX-8

Touring

## Details

- **Price:** 794.35 CAD
- **Vendor:** ACT
- **Type:** Clutch Kits - Single

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 794.35 CAD | In stock |

## Images

- Photo - Primary
- Logo Image

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/act-2004-mazda-rx-8-hd-race-sprung-4-pad-clutch-kit)
> Updated: 2026-07-03