ACT XACT Prolite Flywheel | 2005-2007 Chevrolet Cobalt

2005-2007 Chevrolet Cobalt XACT Prolite Flywheel by ACT Dramatically improved engine response and acceleration, mild to moderate 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 race use; Forged, CNC machined and dynamically computer balanced for smooth high RPM reliability Features Ring Gear Tooth Quantity: 135-tooth Rear Main Seal Style: 1-piece Flywheel Material: Chromoly Engine Balance: Internal Weight: 9.400 lbs. Replaceable Friction Surface: No SFI Rating: SFI 1.1 Benefits Dramatically improved engine response and acceleration, mild to moderate 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 effi