Invidia Gemini R400 Cat-Back Exhaust Stainless Quad Tips | 2011–2014 WRX Hatchback / 2008–2014 STI Hatchback | HS08ST5GM4SS

The Invidia HS08ST5GM4SS Gemini R400 cat-back exhaust is engineered to fill the sound gap between the Q300 and N1 — delivering an aggressive, rich exhaust note without harsh cabin noise at highway speeds. Designed for the 2011–2014 Subaru WRX Hatchback and 2008–2014 STI Hatchback, it combines high-flow performance with tuned mufflers for optimized sound and exhaust flow. Key Features +17 WHP and +26 ft-lbs torque 76mm diameter, 1.5mm thick mandrel-bent SUS304 stainless steel piping Tuned mufflers — aggressive note, minimal cabin drone at highway speeds Cast flanges for optimum fitment and durability Machine-welded construction for uniform strength and clean appearance Straight-cut stainless steel quad tips Lifetime warranty (see Invidia terms and conditions) Important Note If running a stock J-pipe or downpipe, the GrimmSpeed Stock DP to Aftermarket 3" Catback Adapter (p/n 077046) is required. Representative photo — actual product may vary. Vehicle Fitment 2011–2014 Subaru WRX Hatchback 2008–2014 Subaru WRX STI Hatchback Specs Part Number: HS08ST5GM4SS Piping: 76mm, 1.5mm wall, mandrel-bent SUS304 stainless steel Tips: Straight-cut stainless steel quad outlet Power: +17 WHP / +26 ft-lbs torque