Are Aftermarket Exhausts Legal in the US? Your Straightforward Guide
- Gareth Westbrook
- 12 06 2025 Exhaust Systems
Curious about the rules for aftermarket exhausts in the US? This article tells you what’s actually legal, what could get you fined, and why the law can be so confusing depending on where you live. There’s a lot of misinformation out there, so you’ll find clear answers about noise limits, emissions rules, and real tips for avoiding trouble. Get the facts you need before swapping out your exhaust. You’ll even learn how states like California make things extra complicated for car fans.
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