The Zetec-R lightweight flywheels are machined from EN8 steel and designed to take a stock inertia or pre-engaged Ford ring gear. The steel flywheel repositions the ring gear to the same position as a Ford Crossflow flywheel making it possible for those upgrading to retain their existing starter motors. The flywheels come machined with the 36-1 timing holes to fire the crank trigger as per a standard flywheel. Flywheels are available to take 8 1/2" inch and 7 1/2" clutches, and a 7 1/4" race option is available on request.
Flywheel weight (less ring gear) = 5.5kg