GX390 Adjustable Hub Flywheel the ARC Billet Flywheels are CNC machined from 6061 T-6 Aluminum. It weighs 5.40 lbs. The main feature of this design is the steel crankshaft hub that allows for timing changes at 2° increments.

ARC flywheels use a Neodymium (rare earth) magnet which is the most powerful magnet on the market.

Uses stock Honda coil. Has adjustable timing. Fits Electric Start Motors only - Will not work with stock Recoil.

(Note: Use this flywheel, and old-style coil to defeat REV limited on UT2 Motors (old style coil required on UT2 motors)