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Flywheel, Billet, Small Diameter 6603, Finless, GX390 Flywheel, Billet, GX390, Recoil Start Flywheel, Billet, GX390, Recoil Start, Non Adjustable, UT2 Coils (Digital Ignition)

ARC Flywheel 6603

· No Fins for Methanol Applications

· SFI certified billet aluminum

· 14 degrees of Adjustable Timing with ARC's signature adjustable timing hub

· Small 5 3/4" diameter and lite 2.85 lb. weight for quick revving and faster acceleration

· Powerful Rare Earth Magnet

Due to small diameter, this flywheel will accelerate faster than the standard diameter flywheels even those weighing less than this one. This is the Flywheel for ones who want to get out of the hole or corners Quick!

Note: Coil bracket required! Not included unless specified.

For use with handheld starters (extended nut recommended). Will not work with stock recoil.

Fits: GX340, GX390's, 420cc. Predators, & 460 OHV's


Billet Flywheel to Fit GX390’s, and 13 hp. Chinese OHVs, ARC flywheels use a Neodymium (rare earth) magnet, which is the most powerful magnet on the market. Uses stock Honda coil. Will not fit electric start. Will work with stock recoil. Will not work with UT2 Digital Ignition (2012 and later Honda). However, you can use this on UT2 Engines if an old style UT1 coil is used.
4.2 Lbs.
Timing is set at stock.
(6 degree key recommended)

Billet Flywheel to fit UT2 GX390's with Digital Coils

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

Uses stock Honda coil.

Electric Start will also work with stock recoil. Will not work with UT1 Coils

(NOTE: Flywheel does not defeat rev-limiter. You must use a non-rev limited coil)

4.2 Lbs. Timing is 4 degree advanced


Flywheel, Billet, GX390 & 420 Predators, Electric Start, Non Adjustable, UT1 Coils Flywheel, Billet, GX390, Electric Start (adjustable timing)

New for 2018! Available for electric or pull start!

Our non-adjustable billet SFI Certified flywheel model for the Honda GX340 and GX390 engines is now both electric and pull start capable. The key way is fixed in the stock position of 24 degrees with a stock key.

No coil bracket is required, uses the stock coil. Keep in mind that this flywheel 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. Weighs 5lbs including ring gear. Torque to min 85 ft/lbs Minimum coil gap .030

Will work on the Predator 420 and Vegas 460cc engines

Billet Flywheel for Gx340 and 390s: Approx 4.7lbs. 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