India's Aftermarket Silencer Rules Explained: CMVR Noise Limits and Fines
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A new explainer breaks down India's rules for aftermarket motorcycle silencers under CMVR Rule 120(2), which sets noise limits by engine size: 75 dB for bikes up to 80cc, 77 dB for 80-175cc, and 80 dB above 175cc. Unauthorized modifications can bring fines of Rs 1,000 to Rs 10,000 under Section 190(2), plus possible vehicle seizure. The piece cites Bengaluru Traffic Police seizing 947 illegal silencers and booking 3,674 cases in October 2025.


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