Vehicle Mod Laws in Arkansas

Replacing the exhaust system is legal in Arkansas, 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.

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Arkansas 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.

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Smoked or tinted film on headlights and taillights is illegal in Arkansas. 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.

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License plate frames are legal in Arkansas as long as nothing required stays hidden. The plate must stay clearly visible and legible.

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Arkansas sets no lift-height cap, but since Act 492 of 2025 it is a strict-liability offense to operate a passenger car, pickup, SUV, or panel truck modified so the front bumper sits 4 or more inches higher than the rear.

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Arkansas allows up to two each of spot, fog, auxiliary passing, and auxiliary driving lamps, usable on the road with no cover requirement — subject to mounting heights and a four-lamp cap on front lamps over 300 candlepower.

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Arkansas has no suspension, frame-height, or bumper-height statute for lowered vehicles.

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Underglow is legal in Arkansas, including while driving, subject to color and flashing limits: Front-visible light must be white or amber, no red from the front, and no flashing or rotating (a Class A misdemeanor).

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Arkansas has no statute limiting tire or wheel protrusion beyond the fenders for passenger vehicles.

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A 5-inch 'eyebrow' strip measured down from the top center of the windshield is allowed. Because the material must be transparent, a printed or opaque banner is not legal in Arkansas — only a clear tint band.

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Front side windows: minimum 25% VLT. Rear side windows: minimum 25% VLT. Back window: minimum 10% VLT. Darker limits apply behind the driver on some larger vehicles.

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