Section 13 AAC 04.415 - Mufflers and emission-control systems(a) A snowmobile, all-purpose vehicle, or other off-highway vehicle must be equipped with a carburetor intake, exhaust muffler, and an emission-control system in good working order, and may not use a muffler cutout, bypass or other similar device.(b) An exception to the requirements of (a) of this section may be made under a special racing permit as provided in AS 05.35.Eff. 6/28/79, Register 70; am 1/1/2022, Register 240, January 2022