ACT 09-16 BMW 135i/335/435/535/Z4 XACT Flywheel ProMass Brand_KTuned heat-treating process for unparalleled performance

heat-treating process for unparalleled performance

4 Cables Lug Rivets

The internal bubble is normal

Superb integrity and superior performance reduces the risk of component failure and enables higher temperatures and pressures to be maintained with complete confidence

Our all aluminum Dual Core Radiator is direct fit exactly the same as with the original manufacturers part

ACT 09-16 BMW 135i/335/435/535/Z4 XACT Flywheel ProMass Brand_KTuned heat-treating process for unparalleled performanceNoticeably improved engine response and acceleration, OE to mild gear rattle; Heat treated forging for strength and toughness, induction hardened ring gears for maximum life; One piece construction allows less opportunity for failure and provides uniform efficient heat transfer from the clutch disc. No more warped inserts or loose ring gears; Recommended for street and race use; Forged, CNC machined and dynamically computer balanced for smooth high