Invidia HS15STIGM4SS R400 Gemini Cat-Back Exhaust for 2015-2021 Subaru WRX / STI

Vehicle Fitment

• 2015-2021 Subaru WRX (All Trims, All Engines)
• 2015-2021 Subaru WRX STI (All Trims, All Engines)

Features

• Mandrel-bent 76mm (3-inch) piping for optimal exhaust flow
• Quad 101mm (4-inch) single-layer stainless steel tips
• Constructed from high-quality SUS304 stainless steel
• Direct bolt-on installation with OEM-style hangers
• Optimized for a deep, aggressive exhaust note without excessive cabin drone
• Designed to enhance throttle response and overall engine performance
• Includes all necessary gaskets and hardware for installation
• Compatible with both stock and aftermarket downpipes

Specifications

• Material: SUS304 Stainless Steel
• Piping Diameter: 76mm (3 inches)
• Tip Diameter: 101mm (4 inches)
• Tip Style: Quad Single-Layer Stainless Steel
• Installation: Direct bolt-on with OEM-style hangers
• Weight: Approximately 65 lbs (29.5 kg)

Included Components

• 1x Invidia HS15STIGM4SS Cat-Back Exhaust System
• 1x Set of Gaskets
• 1x Set of Installation Hardware (Bolts, Nuts, Washers)

Product Description

The Invidia HS15STIGM4SS R400 Gemini Cat-Back Exhaust System is engineered to enhance the performance and sound of your 2015-2021 Subaru WRX or WRX STI. Featuring mandrel-bent 76mm (3-inch) piping and quad 101mm (4-inch) single-layer stainless steel tips, this exhaust system delivers improved exhaust flow and a deep, aggressive exhaust note. The high-quality SUS304 stainless steel construction ensures durability and a sleek appearance.

Designed for a direct bolt-on installation, the R400 Gemini exhaust system utilizes OEM-style hangers for a precise fit. The system is optimized to enhance throttle response and overall engine performance while minimizing excessive cabin drone. Whether you're looking to increase horsepower, improve throttle response, or simply enhance the sound of your vehicle, the Invidia R400 Gemini Cat-Back Exhaust System is a high-quality upgrade that delivers noticeable performance gains.