Versions of Tennessee Code 69-9-301 - Mufflers required on LawServer 2024 Tennessee Code 69-9-301 – Mufflers required 2023 Tennessee Code 69-9-301 – Mufflers required 2021 Tennessee Code 69-9-301 – Mufflers Required 2020 Tennessee Code 69-9-301 – Mufflers Required 2019 Tennessee Code 69-9-301 – Mufflers required 2010 Tennessee Code 69-9-301. Mufflers required