ACT 09-16 BMW 135i/335/435/535/Z4 XACT Flywheel ProMass Brand_KTuned 4 Cables Lug Rivets

4 Cables Lug Rivets

This enables the radiator to effectively regulate the engine's temperature within the optimal range during high-load sections

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

heat-treating process for unparalleled performance

The internal bubble is normal

ACT 09-16 BMW 135i/335/435/535/Z4 XACT Flywheel ProMass Brand_KTuned 4 Cables Lug RivetsNoticeably 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