Aftermarket Exhaust in Pennsylvania
Vehicle type: Truck
Replacing the exhaust system is legal in Pennsylvania, 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 specifically prohibited.
Verified against primary sources · August 2026
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Frequently Asked Questions
Are aftermarket exhaust legal in Pennsylvania?
What are the aftermarket exhaust limits in Pennsylvania?
Are there exceptions for aftermarket exhaust in Pennsylvania?
Street-legal aftermarket exhaust picks
Gear that helps you mod without a ticket in Pennsylvania.
Cat-back systems keep your emissions equipment intact — the compliance-friendly route.
Decibel meter →Measure your exhaust at the test RPM before a fix-it ticket does.
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