6 Bolt
XACT Flywheel Prolite
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
600420 is a Prolite flywheel, which is ACT's lighter flywheel offering with lowest inertia. Prolite flywheels are designed for best throttle response and acceleration. Prolite flywheels are preferred for road racing or rally racing, and have reduced drivability. Materials are properly distributed for maximum strength, good heat tolerance and rigidity. ACT flywheels are serviceable and can be resurfaced with no need to purchase additional parts.

Fitment:
Ford Mustang Bullitt 2008
Ford Mustang Bullitt 2009
Ford Mustang GT 1996
Ford Mustang GT 1997
Ford Mustang GT 1998
Ford Mustang GT 1999
Ford Mustang GT 2000
Ford Mustang GT 2001
Ford Mustang GT 2002
Ford Mustang GT 2003
Ford Mustang GT 2004
Ford Mustang GT 2005
Ford Mustang GT 2006
Ford Mustang GT 2007
Ford Mustang GT 2008
Ford Mustang GT 2009
Ford Mustang GT 2010
Ford Mustang GT Bullitt 2001
Ford Mustang Shelby GT 2007
Ford Mustang Shelby GT 2008
Ford Mustang SVT Cobra 1996
Ford Mustang SVT Cobra 1997
Ford Mustang SVT Cobra 1998
Ford Mustang SVT Cobra 1999
Ford Mustang SVT Cobra 2001
Ford Mustang SVT Cobra 2003
Ford Mustang SVT Cobra 2004