9m 718 GT4/Spyder/GTS Lightweight Flywheel PERFORMANCE The 2-turn retaining ring is

The 2-turn retaining ring is held in a groove in the hat that overlaps the rotor flanges

which is a vital component in our ability to deliver vehicle-specific optimizations like maximum concavity

Based on the out-going 01-compound

Simple Uninstall:  Revert your ECU to exactly as it was before with the easy to use Uninstall option from the main menu

Once the Girodisc system is in place

9m 718 GT4/Spyder/GTS Lightweight Flywheel PERFORMANCE The 2-turn retaining ring isCNC machined high carbon forged billet steel material 45% weight reduction Direct replacement Quicker acceleration Reduced rotating mass and less engine inertia Better throttle response OEM clutch compatible More power to the wheels ****TARIFFS MAY APPLY THROUGH SHIPPER****