The ACT XACT Streetlite Flywheel (601180) is a one-piece forged, CNC-machined replacement flywheel that noticeably improves engine response and acceleration versus the stock unit, with only mild gear rattle at idle. Heat-treated forging adds strength and toughness, and the induction-hardened ring gear is built for maximum service life. One-piece construction removes the failure points found in multi-piece flywheels and provides uniform, efficient heat transfer away from the clutch disc, eliminating the warped inserts and loose ring gears common on segmented designs. It is dynamically computer-balanced for smooth high-RPM reliability and is recommended for both street and race use.
WarrantyInstallation Instructions
- "Excellence in Performance", backed by the best one-year warranty in the industry!
Specifications
- Construction: One-piece forged, CNC-machined
- Ring Gear: Induction-hardened for extended service life
- Balance: Dynamically computer-balanced for smooth high-RPM operation
- Benefit: One-piece design provides uniform, efficient heat transfer and eliminates warped inserts/loose ring gears
- Recommended Use: Street and race
- Part Number: 601180
Vehicle Applications
- 2008 BMW 135i
- 2009 BMW 135i
- 2007 BMW 335i
- 2008 BMW 335i
- 2009 BMW 335i
- 2009 BMW 335i xDrive
- 2007 BMW 335xi
- 2008 BMW 335xi
- 2008 BMW 535i
- 2009 BMW 535i
- 2009 BMW 535i xDrive
- 2008 BMW 535xi
Frequently Asked Questions
What vehicles fit the ACT 601180 XACT Streetlite Flywheel?
The ACT 601180 flywheel is confirmed to fit 2008-2009 BMW 135i, 2007-2009 335i, 2009 335i xDrive, 2007-2008 335xi, 2008-2009 535i, 2009 535i xDrive, and 2008 535xi models. See the Vehicle Applications section above for the full year-by-year list.
Is the ACT 601180 flywheel a one-piece or multi-piece design?
It is a one-piece forged and CNC-machined flywheel. The one-piece construction removes the failure points found in multi-piece designs and gives more uniform, efficient heat transfer away from the clutch disc.
Can the ACT 601180 flywheel be used for racing?
Yes. ACT recommends the Streetlite flywheel for both street and race use, and the induction-hardened ring gear and dynamic computer balancing are built for reliability at high RPM.
What warranty comes with the ACT 601180 flywheel?
ACT backs the 601180 flywheel with a one-year warranty; full warranty terms are provided in the linked PDF above.