As of today, this is the largest diameter billet flywheel ARC has ever made. Like all our billet flywheels, it is SFI certified. It weighs 8 lbs and is stock diameter. Material has been removed from the backside of the flywheel near the rim, reducing rim weight for faster acceleration. It uses the stock coil without the need for any offset coil bracket. You should be able to simply remove your stock flywheel and replace it with this one. When using a straight key, the ignition timing is set at 19° BTDC when the adjustable hub's index mark is set to the negative side of the scale. Each tick mark on the scale toward the positive side is 2°, giving you the ability to quickly and easily advance timing.
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