Invidia

• 2015–2021 Subaru | WRX STI
• 2015–2021 Subaru | WRX

The Invidia Gemini R400 Cat-Back Exhaust for the 2015-2021 Subaru WRX and WRX STI pairs the benchmark R400 Gemini muffler configuration with single-layer polished stainless steel tips for the clean, classic look. A full 76mm (3-inch) mandrel-bent 304 stainless steel system with the aggressive R400 muffler tuning delivers a deep, menacing exhaust note that stands out without being overwhelming, while smooth bends improve horsepower, torque, and throttle response. Quad 4-inch polished stainless steel tips finish the system, and hangers welded onto the OEM locations make it a direct bolt-on upgrade.

• 2015-2021 Subaru WRX + 2015-2021 Subaru WRX STI (VA chassis, sedan)
• 76mm (3") mandrel-bent 304 stainless steel piping, robot-TIG welded, polished
• R400 Gemini tuned mufflers — loudest/most aggressive in Invidia's stainless lineup
• Quad 4" single-layer polished stainless steel tips
• Hangers welded onto OEM locations; new gaskets and hardware included
• With a stock downpipe, an aftermarket DP-to-cat-back adapter (e.g. GrimmSpeed) may be required
• Part HS15STIGM4SS

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