Invidia HS02SW1G3S Q300 Cat-Back Exhaust for 2002-2007 Subaru WRX/STI

Vehicle Fitment

• 2002-2007 Subaru Impreza WRX (2.0L Turbo, AWD)
• 2004-2007 Subaru Impreza WRX STI (2.5L Turbo, AWD)

Features

• Invidia Q300 performance cat-back exhaust engineered for turbo Subaru applications
• Mandrel-bent SUS304 stainless steel piping for improved exhaust flow
• Flat-bottom muffler design for optimized aerodynamics and reduced back pressure
• Rolled stainless-steel or polished 110 mm exhaust tip for aggressive rear styling
• Precision CNC-machined flanges and robot TIG welding for strength and durability
• Direct-bolt-on fitment using OEM hanger locations
• Enhances throttle response, mid-range torque, and overall performance
• Delivers a rich, deep sporty exhaust note with street-friendly drone characteristics

Specifications

• Part Number: HS02SW1G3S
• Exhaust Type: Cat-back system (Q300 series)
• Piping Diameter: ~76 mm (≈3")
• Exhaust Tip Diameter: ~110 mm (≈4.3")
• Main Material: SUS304 stainless steel
• Fitment Drivetrain: All-wheel drive (AWD)
• Compatible Engines: 2.0 L turbo (WRX), 2.5 L turbo (WRX STI)

Included Components

• 1x Invidia Q300 cat-back exhaust assembly (HS02SW1G3S)
• 1x Rolled stainless-steel exhaust tip
• Mounting hardware
• Installation gaskets
• Installation instructions

Product Description

The Invidia HS02SW1G3S Q300 Cat-Back Exhaust is a performance upgrade designed specifically for 2002-2007 Subaru Impreza WRX and 2004-2007 WRX STI models equipped with turbocharged engines and AWD. Built with mandrel-bent SUS304 stainless steel tubing and a flat-bottom muffler design, the Q300 exhaust improves exhaust gas flow, helping reduce back pressure and deliver stronger mid-range torque and throttle response.

Featuring a polished rolled stainless-steel tip and precision construction, this exhaust enhances both the sound and appearance of your Subaru. The direct bolt-on design uses existing OEM hanger locations and includes all necessary hardware, making installation straightforward for experienced installers. Ideal for enthusiasts seeking a deeper, more refined exhaust tone with performance benefits over the stock system, the HS02SW1G3S offers a combination of reliability, style, and improved exhaust efficiency.