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The Injen SES1971 cat‑back exhaust for 2017–2019 Nissan Sentra 1.6L Turbo is constructed from mandrel‑bent 304 stainless steel for smooth flow and corrosion resistance. It uses 76mm piping, a 12" resonator to limit drone, and finishes with a 3.5" polished rolled tip for a refined appearance. The system improves exhaust tone and is hand TIG‑welded with premium hardware; dyno‑proven gains of up to 14 hp have been reported for this application.
Injen 2017+ Nissan Sentra 1.6L Turbo 4cyl SS Cat-Back Exhaust w/ Polished Tip
