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Arizona Exhaust & Muffler Laws (2026)

Info: Working muffler required; muffler cutout/bypass prohibited; excessive fumes/smoke barred; civil penalty (no fixed dB) — A.R.S. §28-955.

InfoVerified Jul 23, 2026

Working muffler required; muffler cutout/bypass prohibited; excessive fumes/smoke barred; civil penalty (no fixed dB) — A.R.S. §28-955.

Official source: azleg.gov →

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