The ACT 600145-03 is an XACT Streetlite flywheel built for Mazda RX-8 rotary applications and ships complete with the ACT CW03 counterweight required for installation. Streetlite flywheels are considerably lighter than the factory unit while remaining the most durable flywheel in the ACT lineup, with material properly distributed for strength, lower rotating inertia, good heat tolerance, and rigidity. The flywheel is preferred for street or drag racing use and is fully serviceable, meaning it can be resurfaced without buying additional parts.
WarrantyInstallation Instructions
Specifications:
- Product Weight: 18.8 lbs
- Material: Chromoly steel
- Friction Surface Diameter: 9.4 in / 240mm
- Ring Gear: 125-tooth
- SFI Rating: 1.1
- Counterweight: ACT CW03 counterweight included, assures correct external balance for the RX-8's manual-shift engine using the OE front counterweight
- Resurfacing Limit: Up to 0.040 in (1.02mm) of material removal
- Part Number: 600145-03
Vehicle Applications:
- 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 GS
- 2008 Mazda RX-8 GT
- 2008 Mazda RX-8 Grand Touring
- 2008 Mazda RX-8 Sport
- 2008 Mazda RX-8 Touring
- 2009 Mazda RX-8 GS
- 2009 Mazda RX-8 GT
- 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 GT
- 2010 Mazda RX-8 Grand Touring
- 2010 Mazda RX-8 R3
- 2010 Mazda RX-8 Sport
- 2011 Mazda RX-8 GT
- 2011 Mazda RX-8 Grand Touring
- 2011 Mazda RX-8 R3
- 2011 Mazda RX-8 Sport
This product can expose you to chemicals including carbon black, glass wool fibers, and silica (in clutch discs), chromium and nickel, which are known to the State of California to cause cancer or birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov
FAQ
Does this flywheel include the counterweight needed for installation?
Yes. The 600145-03 kit includes the ACT CW03 counterweight required when installing an XACT flywheel on the Mazda RX-8, so no separate purchase is needed.
What is a flywheel step, and why does it matter?
The flywheel step is the distance between the friction surface and the pressure plate mounting point, and it determines the proper working range of the pressure plate for the application.
Can this flywheel be resurfaced?
Yes. It can be resurfaced like a stock flywheel using a flywheel grinder, removing no more than 0.040 in (1.02mm) of material total while maintaining the correct flywheel step.
Does this kit fit all RX-8 trims from 2004-2011?
Yes, it covers Base, 40th Anniversary Edition, GS, GT, Grand Touring, R3, Shinka, Sport, and Touring trims across the 2004-2011 model years. Confirm the exact year and trim against the Vehicle Applications list above.