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SFI certified ARC Racing GX390 Electric Start Adjustable Flywheel for the Honda GX340 / GX390 / 420cc / 460cc engines. 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. Hub comes set on the first negative mark, which is stock approximately 24 deg timing. Designed for use with either an on-board electric starter or a handheld electric starter. No coil bracket is required, uses the stock coil. Keep in mind that this is not intended for use with the newer UT2 coils with the built-in 4500 RPM rev-limiter. You will need one of the previous coil versions that do not have the rev-limiter.
