The ACT XACT Prolite flywheel is a lightweight Prolite option for 2007–2011 Toyota and Lotus 1.8L DOHC engines, optimized for lowest inertia to improve throttle response and acceleration. Intended for road racing and rally use, Prolite flywheels trade some drivability for quicker engine response. They are serviceable and can be resurfaced without replacing additional parts.
ACT 07-11 Toyota Lotus 1.8 L4 DOHC XACT Flywheel Prolite