Aftermarket Exhaust in Minnesota
Replacing the exhaust system is legal in Minnesota, but a muffler in good working order is required and cutouts or bypasses are prohibited.
Verified against primary sources · August 2026
What the law says
Replacing the exhaust system is legal in Minnesota, but a muffler in good working order is required and cutouts or bypasses are prohibited. Removing the catalytic converter is prohibited by federal law (Clean Air Act § 203) regardless of state rules. Minnesota bans 'sharp popping or crackling' exhaust by name and separately requires pollution-control equipment (§ 169.693). No periodic inspection is required.
Specific Limits
- Cutouts
- prohibited
- Muffler required
- Yes
- Catalytic converter
- removal prohibited by federal law
Frequently Asked Questions
Are aftermarket exhaust legal in Minnesota?
What are the exact aftermarket exhaust limits in Minnesota?
Street-legal aftermarket exhaust picks
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