Invidia HS08ST5GM4ST Gemini R400 Cat-Back Exhaust for 08-14 Subaru WRX/STi Hatch

Vehicle Fitment

• 2008-2014 Subaru WRX STI (Hatchback)
• 2011-2014 Subaru WRX (Hatchback)

Fitment Notes

• Designed exclusively for hatchback variants--does **not fit** sedan or wagon models.
• Includes all necessary gaskets and mounting hardware for direct bolt-on installation.
• Retains OEM part locations and mounting points to ensure seamless fit.

Features

• High-flow, single-layer R400 muffler core for improved exhaust flow and performance.
• Constructed from SUS304 mandrel-bent stainless steel with robot-TIG welding.
• Includes quad 4" titanium tips--burnt finish--for both aggressive styling and lightweight performance.
• Optimized design for minimal bends and backpressure, enhancing horsepower and torque.

Specifications

• Part Number: HS08ST5GM4ST
• Type: Full cat-back exhaust system
• Material: SUS304 stainless steel; mandrel-bent
• Piping Diameter: Approximately 3"
• Tip Size: Quad 4" titanium tips

Included Components

• 1x Full Gemini R400 cat-back exhaust system
• Gaskets and mounting hardware

Product Description

The Invidia HS08ST5GM4ST Gemini R400 cat-back exhaust elevates performance and sound for hatchback Subaru models--specifically the 2008-2014 WRX STI and 2011-2014 WRX. Featuring a 3" mandrel-bent SUS304 exhaust path and R400 single-layer muffler core, this system enhances power delivery and delivers a deeper, aggressive tone.

Its quad 4" titanium tips not only reduce weight but also add a show-stopping visual touch with a burnt finish. Built and welded with precision, the Gemini R400 offers durable, OEM-matching fitment with included hardware for clean installation and performance gains right out of the box.