Vehicle Mod Laws in Alaska

Replacing the exhaust system is legal in Alaska, but a muffler in good working order is required and cutouts or bypasses are prohibited. Modifications that make the exhaust louder than the originally installed muffler are prohibited.

Limits, exceptions & statute →

Alaska sets no statewide decibel limit for passenger cars. A muffler in good working order is required, exhaust may not produce excessive or unusual noise, and cutouts or bypasses are prohibited.

Limits, exceptions & statute →

Smoked or tinted film on headlights and taillights is illegal in Alaska. Headlights must emit white light and taillights must show red at the required visibility distance, and tint that dims or discolors them violates those requirements.

Limits, exceptions & statute →

License plate frames are legal in Alaska as long as nothing required stays hidden. The plate must be maintained so as to be clearly legible; there is no explicit frame or cover ban.

Limits, exceptions & statute →

Alaska caps frame height — or body floor height — at 24, 26, or 28 inches by GVWR class, with the body floor no more than 3 inches above the top of the frame.

Limits, exceptions & statute →

Alaska allows auxiliary lamps on the road with no cover requirement. No more than four front lights over 300 candlepower may be lit when there is approaching traffic, spotlights are capped at two, and nothing red, flashing, or rotating may show to the front.

Limits, exceptions & statute →

Alaska has no lowering-specific rule; its equipment regulations address bumper height only for modified or raised pickups.

Limits, exceptions & statute →

Alaska does not name underglow, but its lighting rule reaches it: no red light visible from the front, no flashing or rotating light, and no color beyond those the chapter allows.

Limits, exceptions & statute →

Alaska sets no limit on how far tires may protrude, but every vehicle must have a device that effectively reduces wheel spray and splash to the rear, extending down to within 14 inches of the ground.

Limits, exceptions & statute →

An 'eyebrow' strip along the top edge is allowed, extending no more than 5 inches down, and it must be non-reflective. Because the material must be transparent, a printed or opaque banner is not legal in Alaska — only a clear tint band.

Limits, exceptions & statute →

Front side windows: minimum 70% VLT. Rear side and back windows: minimum 40% VLT. Darker limits apply behind the driver on some larger vehicles.

Limits, exceptions & statute →