ACT ZM8-HDG6 Heavy Duty Race Sprung 6-Pad Clutch Kit for 2004-2011 Mazda RX-8

Vehicle Fitment

• 2004-2011 Mazda RX-8 (Base/Shinka/40th Anniversary/GS/GT/Sport/Touring/Grand Touring/R3, 1.3L Rotary Engine, Manual Transmission)

Features

• Heavy Duty diaphragm pressure plate increases clamp load and reliability
• Race-oriented 6-pad sprung ceramic clutch disc for aggressive torque handling
• Spring-center hub helps absorb driveline shock and damping under load
• Ceramic friction materials engineered for high heat tolerance and racing use
• Light to moderate pedal effort with aggressive engagement feel
• Precisely assembled and dynamically balanced for high-RPM reliability
• Recommended for high-horsepower street and race applications
• Moderate friction life extended by ACT's exclusive diaphragm design

Specifications

• Clutch Disc Diameter: 9.4 in / 240 mm
• Disc Material: Ceramic friction; sprung 6-pad configuration
• Pressure Plate: Heavy Duty diaphragm design
• Input Shaft Diameter: 1 in
• Spline Count: 23
• Approx. Torque Capacity: ~420 ft-lbs (~72% over typical OEM)
• Product Weight: ~15.9 lbs
• Flywheel: Requires compatible flywheel with counterweight (not included)

Included Components

• 1x Heavy Duty diaphragm pressure plate
• 1x Sprung 6-pad ceramic clutch disc
• 1x Clutch release bearing
• 1x Pilot bearing
• 1x Clutch alignment tool

Product Description

The **ACT ZM8-HDG6 Heavy Duty Race Sprung 6-Pad Clutch Kit** is a high-performance clutch solution engineered for the **2004-2011 Mazda RX-8** with the 1.3 L rotary engine and manual transmission. Featuring ACT's Heavy Duty diaphragm pressure plate paired with a 6-pad sprung ceramic clutch disc, this kit offers enhanced clamp load, aggressive engagement, and improved torque handling compared to many OEM clutch systems. The spring-center hub helps absorb driveline shock and dampen torsional vibrations, while ceramic friction materials provide excellent high-heat performance for spirited street driving and occasional racing.

With an approximate torque capacity of **420 ft-lbs** - around **72% higher than many OEM clutches - ** the ZM8-HDG6 balances light to moderate pedal effort with responsive engagement ideal for high-horsepower street or race use. The kit includes release and pilot bearings plus an alignment tool to support installation, but a compatible flywheel with the correct counterweight design is **required and not included**. This clutch kit's precision balancing and robust construction make it an excellent upgrade for RX-8 enthusiasts seeking stronger clutch performance and heat tolerance under demanding conditions.