-16%
  • Trusted by Racers

    Professional-grade parts used trackside.

  • Real Support, Real People

    Expert help during business hours.

  • Secure Shopping

    Encrypted checkout & trusted payments.

  • Fast U.S. Shipping

    Orders ship quickly from regional warehouses.

ACT Heavy Duty Street Sprung Clutch Kit for Mazda RX-8 Part #ZM8-HDSS

ACT
actZM8-HDSS
In stock
Performance Clutch Kit
$691.00 $576.99
The ACT ZM8-HDSS clutch kit is engineered to deliver exceptional performance and durability for Mazda RX-8...
$576.99

ACT Heavy Duty Street Sprung Clutch Kit for Mazda RX-8 Part #ZM8-HDSS

The ACT ZM8-HDSS clutch kit is engineered to deliver exceptional performance and durability for Mazda RX-8 models from 2004 to 2011. Featuring ACT's most popular Heavy Duty pressure plate, this kit utilizes an exclusive diaphragm design to increase clamp load, reduce deflection, and maximize clutch lifespan. Each pressure plate undergoes a four-stage heat-treating process ensuring unparalleled resilience and consistent performance under demanding conditions. Precision cover stampings enhance rigidity and stability, providing a reliable foundation for enhanced power transfer. The performance street discs included are crafted from premium organic materials with high copper content, facilitating superior heat transfer and reducing fade during aggressive driving or spirited street use. The steel-backed lining offers increased burst strength and durability, making these discs suitable for both street and race applications. The discs are designed with reduced marcel, enabling faster shift action and smoother engagement, complementing the pressure plates' high clamp load. These components are carefully engineered, precisely assembled, and dynamically computer balanced to ensure smooth high RPM operation. The kit offers light to moderate pedal effort, positive engagement, and a slight OE to mild gear rattle, providing a balanced driving experience. Backed by ACT's industry-leading one-year warranty, the ZM8-HDSS clutch kit ensures long-lasting performance, reliability, and peace of mind for enthusiasts seeking a combination of street comfort and racing capability. Ideal for drivers demanding high clamp load, heat resistance, and extended friction life, this clutch kit is a top choice for Mazda RX-8 owners looking to upgrade their drivetrain for improved performance and durability.

Features:

  • Heavy Duty pressure plate with exclusive diaphragm design for increased clamp load and reduced deflection
  • Performance street discs with premium organic materials and high copper content for superior heat transfer
  • Steel-backed lining for greater burst strength and durability
  • Reduced marcel for faster shift action and smoother engagement
  • Dynamically computer balanced for high RPM reliability
  • Light to moderate pedal effort with positive engagement and OE to mild gear rattle
  • Carefully engineered, precisely assembled, and 100% clamp load tested

Fitment:
2004 Mazda RX-8 Base
2005 Mazda RX-8 Base
2005 Mazda RX-8 Shinka
2006 Mazda RX-8 Base
2007 Mazda RX-8 Base
2008 Mazda RX-8 40th Anniversary Edition
2008 Mazda RX-8 Grand Touring
2008 Mazda RX-8 Sport
2008 Mazda RX-8 Touring
2009 Mazda RX-8 Grand Touring
2009 Mazda RX-8 R3
2009 Mazda RX-8 Sport
2009 Mazda RX-8 Touring
2010 Mazda RX-8 Grand Touring
2010 Mazda RX-8 R3
2010 Mazda RX-8 Sport
2011 Mazda RX-8 Grand Touring
2011 Mazda RX-8 R3
2011 Mazda RX-8 Sport

Read More
Read Less

Shipping

Order Processing
All orders are processed and shipped within 24 hours of purchase (excluding weekends and holidays).
Orders placed after 3:00 PM EST may ship the following business day.

Shipping Methods
Customers select their preferred shipping method and speed at checkout.
Shipping times are determined by the carrier and cannot be guaranteed by us.
Tracking information will be provided once your order has shipped.

Shipping Coverage
If your package arrives damaged, please notify the delivery driver immediately and contact the shipping carrier to file a claim.
You must report any missing or damaged items within 14 days of delivery.
After this time, we cannot be held responsible for lost or damaged items.

Returns

Return Window
You have 30 days from the date of delivery to request a return.
After 30 days, we are unable to accept returns, exchanges, or refund requests.

Eligibility
Items must be returned in their original condition—unused, unwashed, and with all tags and packaging intact.
Certain products may not be eligible for return (e.g., special-order items, customized products, or perishable goods).
Items that have been altered, installed, or modified cannot be returned.

Return Process
Contact our Customer Support team to request a Return Authorization (RMA) before sending items back.
Once your return is approved, you’ll receive instructions on where to send the product.
Customers are responsible for return shipping costs unless the item was defective or incorrect.

Refunds
Refunds are issued to the original payment method once the returned item has been received and inspected.
Please allow 5–10 business days for the refund to appear on your account.
In some cases, a restocking fee may apply (if applicable, this will be disclosed during your return authorization).

Your cart

×