The ACT Flywheel Kit Streetlite 600145-03 is the ideal choice for enthusiasts looking to enhance the performance of their Mazda RX-8. Designed specifically for models produced between 2004 and 2011, this flywheel kit includes a counterweight that is essential for proper installation, ensuring optimal performance in rotary applications.
One of the standout features of the 600145-03 is its lightweight design, which is significantly lighter than the stock flywheel. This reduction in weight leads to a noticeable improvement in engine response and acceleration, making your driving experience more dynamic. Customers have reported that the difference is palpable, with one user stating, "The car feels so much more responsive; I can feel the power right off the line!"
Constructed from heat-treated chromoly steel, the flywheel is not only robust but also features induction-hardened ring gears for extended durability. This means you can rely on it for both street driving and track days without worrying about wear and tear. Another satisfied customer mentioned, "I've used this flywheel for over a year now, and it still performs like new!"
Technical specifications for the ACT 600145-03 include:
Installation is straightforward, and all necessary mounting hardware is included with the kit. The flywheel bolts (M10-1.25 x 20mm) and counterweight bolts (M8-1.0 x 20mm) come with the package, making it a hassle-free upgrade for your vehicle.
For those looking to maximize their vehicle's performance, the ACT Flywheel Kit Streetlite 600145-03 is a solid investment. It's designed to be serviceable, allowing for resurfacing without the need for additional parts, which adds to its longevity and value. As one user put it, "This flywheel is a game-changer for my RX-8; I can't recommend it enough!"
Install Instructions:
Upgrade your Mazda RX-8 with the ACT Flywheel Kit Streetlite 600145-03 and feel the difference in your driving experience!
Other Part Numbers:
ACT #act600145-03
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov
| Make Vehicle | Model | Year |
|---|---|---|
|
2004-2011 Mazda RX-8 |
RX-8 | 2004-2011 |

If you've added boost, tuned for more power, or simply want better throttle control, then your stock clutch won't cut it. That?s where ACT (Advanced Clutch Technology) comes in delivering high-performance clutch kits and flywheels designed for real drivers who push their builds on the street, strip, or track.
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Whether you're upgrading for more power or replacing a tired OEM clutch, ACT gives you the bite, strength, and feel to drive harder with confidence. No compromises, no excuses just parts that work when it matters.