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Pennsylvania Exhaust & Muffler Laws (2026)

Info: Muffler required; cutouts/bypasses and noise-amplifying mods prohibited; sound per Dept.

InfoVerified Jun 19, 2026

Muffler required; cutouts/bypasses and noise-amplifying mods prohibited; sound per Dept. regulations (no fixed statutory dB) — 75 Pa.C.S. §4523.

Official source: legis.state.pa.us →

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