2005-2016 Scion tC
ACT's Prolite flywheel 600390 is their lightest flywheel for your Scion tC and offers the lowest inertia, the best throttle response, and acceleration. The Prolite flywheels are best suited for road racing or rally racing, and have reduced street drivability. The are designed for properly distributed maximum strength, good heat tolerance, and rigidity. An added benefit of the ACT Prolite flywheel is that they are serviceable and can be resurfaced with no need to purchase additional parts.
Flywheel Weight - 10.1lbs
Flywheel Tooth Count - 120
ACT Difference - Forged, CNC machined and dynamically computer balanced for smooth high RPM reliability
Recommended Use - Recommended for race use
Feel - Dramatically improved engine response and acceleration, mild to moderate gear rattle
Can I use an aftermarket flywheel with an ACT clutch?
The ACT clutch system is designed to work with both stock and good quality aftermarket flywheels. Inferior aftermarket flywheels may have trouble with warpage or high wear. When replacing a flywheel, be sure that the new flywheel meets the same specifications, such as proper step, ring gear tooth count, flywheel thickness, ring gear offset, etc. If the ACT clutch is designated as part of a conversion kit, then it must be used with only the corresponding ACT flywheel.
What is a flywheel step?
The flywheel step determines the proper working range of the pressure plate and is extremely crucial for the clutch to work properly. The step is the distance between the friction surface and the pressure plate mounting point on the flywheel. Depending on the make and model of the car it can either be an UP step or DOWN step and sometimes the flywheel will be flat (zero step). Check the manufacturer's specifications about the proper flywheel step for the applications
Can the XACT Flywheels be resurfaced, and is there a special process?
Yes, ACT XACT flywheels can be resurfaced just like a stock flywheel and there is no special process other than using a flywheel grinder in good condition to remove as little material as possible for full cleanup (no more than 0.040” / 1.02mm may be removed). Make 100% sure that the proper flywheel step is maintained as this will affect the clutch function if incorrect.