Invidia HS15STIGM4ST Gemini/R400 Exhaust Fits 2015+ WRX/STI For Sale - New and Used

Upgrade the exhaust appearance and configuration of your compatible Subaru with the Invidia Gemini/R400 Single Layer Quad Titanium Tip Cat-Back Exhaust, part number HS15STIGM4ST. This cat-back system is designed to fit select 2015 and newer Subaru WRX and WRX STI applications, including the 2015–2016 models listed for this part. The system replaces the exhaust components behind the catalytic converter and provides a vehicle-specific configuration for a clean, complete installation. Always verify vehicle year, trim, drivetrain, and existing exhaust configuration before ordering.
The Invidia Gemini/R400 system features a quad-exit layout with single-layer titanium tips for a distinctive, performance-oriented appearance. The polished tip finish and four-outlet design provide a direct visual upgrade while complementing the sporty styling of the WRX and WRX STI. Its cat-back format is intended for enthusiasts seeking a purpose-built exhaust solution with coordinated tubing, muffler, and outlet components rather than a universal fit setup. Use appropriate installation hardware, inspect all connections before driving, and follow professional installation practices for the best result.
This product is branded Invidia and is not represented as an original equipment part or as affiliated with Subaru. Fitment is limited to compatible applications, and additional modifications may be necessary on vehicles with aftermarket components or prior exhaust changes. This exhaust is not CARB approved based on the supplied product information, and a required emissions acknowledgement may apply. Confirm local emissions regulations before installation or use, particularly in areas with inspection requirements. Package contents are intended for one complete cat-back exhaust system, subject to the manufacturer’s supplied Invidia

Part Number: HS15STIGM4ST

Exhaust Type: Cat-back exhaust system designed for installation behind the catalytic converter

Fitment: Fits select 2015 and newer Subaru WRX and WRX STI applications

Outlet Design: Quad exhaust outlet configuration

Tip Style: Single-layer titanium exhaust tips

System Style: Vehicle-specific Gemini/R400 exhaust design

Emissions Note: Not CARB approved; verify local regulations before installation

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