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The Injen axle‑back exhaust for 2006–2009 Civic Si is a 60mm system engineered for improved flow, sound, and power. Constructed from mandrel‑bent stainless steel with TIG welding, it includes tubing, mufflers, hardware, hangers and a 4.0" stainless tip for a bolt‑on install. The Super SES tune complements performance intakes to broaden the power band, while CNC flanges and polished finishes finish the look.
Injen 06-09 Civic Si Coupe & Sedan 60mm Axle-back Exhaust
