ACT ZX4-HDSS HD Clutch Kit w/ Flywheel for 07-13 Mazda 3 Mazdaspeed

Vehicle Fitment

• 2007-2013 Mazda 3 (Mazdaspeed, 2.3L Turbo I4, FWD)
• 2006-2007 Mazda 6 (Mazdaspeed, 2.3L Turbo I4, AWD)

Features

• Heavy Duty pressure plate increases clamp load and torque capacity
• Performance Street sprung organic clutch disc for smooth engagement
• Includes ACT Prolite lightweight flywheel for improved throttle response
• Engineered for 20-50% increased torque holding over OE
• Premium organic friction material with high copper content for heat dissipation
• Reduced marcel design for faster, more precise shifting
• Four-stage heat-treated diaphragm spring for durability and consistency
• Dynamically balanced components for high RPM stability

Specifications

• Clutch Type: Heavy Duty / Performance Street Sprung
• Disc Diameter: 240mm (9.4 in)
• Disc Material: Organic
• Input Shaft Diameter: 1 in
• Torque Capacity: Up to 449 ft-lbs
• Torque Increase: ~51% over OE
• Flywheel Type: ACT Prolite (included)
• Drivetrain: FWD / AWD compatible (per application)

Included Components

• 1x ACT Heavy Duty Pressure Plate
• 1x ACT Performance Street Sprung Clutch Disc
• 1x ACT Prolite Flywheel
• 1x Alignment Tool
• 1x Release Bearing
• 1x Pilot Bearing

Product Description

The ACT ZX4-HDSS Heavy Duty Performance Street Clutch Kit is designed for driversseeking a significant upgrade over factory clutch systems while maintainingdaily drivability. Featuring a heavy-duty pressure plate and organic streetdisc, this kit delivers smooth engagement with increased torque capacity,making it ideal for lightly modified to moderately tuned Mazdaspeed vehicles.The included Prolite flywheel reduces rotational mass, improving throttleresponse and acceleration.

This kit supports up to approximately 449 ft-lbs of torque and offers up to a51% increase in holding capacity over stock, making it suitable for performancebuilds, spirited driving, and track use. Expect slightly increased pedal effortand some gear rattle due to the lightweight flywheel design. No lift or dropheight applies, as this is a drivetrain component.