The ACT XACT Prolite flywheel for 2007 Ford Mustang is a lightweight, low-inertia option built to improve throttle response and acceleration. Prolite flywheels are aimed at road and rally applications where quicker engine revving matters; they trade some drivability for faster response. Materials are distributed for strength, heat tolerance and rigidity, and ACT makes these serviceable and resurfaceable.
ACT 2007 Ford Mustang XACT Flywheel Prolite