IS MY MOD LEGAL?

Complete Guide to Vehicle Modification Laws in Colorado

Colorado strikes a balanced approach to vehicle modifications, allowing most popular upgrades while maintaining safety standards. Whether you're looking to enhance your truck's performance or add some style to your daily driver, understanding these regulations will help you stay legal on Colorado roads.

Window Tint

Status: Conditional

Colorado's Window Tint in Colorado laws allow moderate tinting on front windows while giving you complete freedom on rear windows. The front side windows have visibility requirements, but you can go as dark as you want on rear side windows and the rear windshield. Get the exact limits, statute citations, and a printable PDF in your compliance report.

Lift Kits

Status: Conditional

Lift Kits in Colorado are legal with important safety restrictions focused on bumper height limits and proper equipment positioning. You'll need to maintain headlight aim and keep safety equipment visible after lifting. Get the exact limits, statute citations, and a printable PDF in your compliance report.

Lowering Modifications

Status: Legal

Good news for the stance crowd - Lowering in Colorado appears to have no specific statutory restrictions. You just need to ensure all lighting remains functional and no parts drag during normal operation. Get the exact limits, statute citations, and a printable PDF in your compliance report.

Light Bars & LED Lighting

Status: Conditional

Light Bars & LED Lighting in Colorado are legal to install but must be covered when driving on public roads. Only certain colors are permitted for auxiliary lighting, and they cannot interfere with required vehicle lighting. Get the exact limits, statute citations, and a printable PDF in your compliance report.

Headlight & Taillight Tint

Status: Conditional

Headlight & Taillight Tint in Colorado is allowed as long as it meets minimum visibility and light output requirements. The tint cannot significantly reduce the effectiveness of your safety lighting or change required light colors. Get the exact limits, statute citations, and a printable PDF in your compliance report.

Exhaust Noise Regulations

Status: Conditional

Colorado regulates Exhaust Noise in Colorado with specific decibel limits and requires functioning mufflers on all vehicles. Some municipalities may have stricter noise ordinances than state law. Get the exact limits, statute citations, and a printable PDF in your compliance report.

Aftermarket Exhaust Systems

Status: Conditional

Aftermarket Exhaust in Colorado systems are welcome, provided they include functioning mufflers and stay within noise limits. This gives enthusiasts room for performance upgrades while maintaining reasonable noise levels. Get the exact limits, statute citations, and a printable PDF in your compliance report.

Wheel & Tire Protrusion

Status: Conditional

Wheel & Tire Protrusion in Colorado is allowed up to specific limits beyond the fenders. Beyond these limits, you may need additional protective equipment like mud flaps or fender extensions. Get the exact limits, statute citations, and a printable PDF in your compliance report.

Underglow Lighting

Status: Conditional

Underglow in Colorado is legal to install but cannot be visible while driving on public roads. Certain colors are prohibited, and the lights cannot flash or strobe while driving. Get the exact limits, statute citations, and a printable PDF in your compliance report.

Window Banners

Status: Conditional

Window Banners in Colorado are allowed on windshields within specific height limits and must be non-reflective. The banner cannot obstruct the driver's view of the road. Get the exact limits, statute citations, and a printable PDF in your compliance report.

License Plate Frames

Status: Conditional

License Plate Frames in Colorado are legal as long as they don't obscure any part of the license plate number, letters, or validation stickers. This includes both decorative frames and dealer frames. Get the exact limits, statute citations, and a printable PDF in your compliance report.

Staying Compliant

Colorado's modification laws are generally enthusiast-friendly while prioritizing safety. Most popular modifications are legal with reasonable restrictions, though local municipalities may have additional requirements beyond state law. For a personalized compliance report with exact limits, statute citations, and a printable PDF you can keep in your glovebox, check out our compliance report.


This guide is for informational purposes only. Data is AI-extracted from public statutes and may contain errors. Always verify with local authorities.

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