Invidia HS15STIG3T Q300 Rolled Titanium Quad Tip Cat-Back for 15-21 Subaru WRX

Vehicle Fitment

• 2015-2021 Subaru WRX & WRX STI (sedan, 2.0L & 2.5L Turbo, AWD)

Features

• Q300 high-flow performance cat-back exhaust system
• Rolled burnt titanium quad exhaust tips for aggressive styling
• Mandrel-bent SUS304 stainless steel piping for smooth airflow
• Flat-bottom muffler design for improved aerodynamics
• Dual tuned mufflers for balanced sound and flow
• Optimized back-pressure reduction for torque and response gains
• Durable robot TIG-welded construction
• Direct bolt-on installation using factory hangers and mounts

Specifications

• Piping diameter: ~76 mm main with split to 60 mm
• Tip diameter: ~110 mm rolled burnt titanium quad tips
• Material: SUS304 stainless steel with titanium-finished tips
• Exit configuration: Quad rear outlets
• Fitment: AWD Subaru WRX & WRX STI sedans

Included Components

• 1x Invidia Q300 cat-back exhaust system (HS15STIG3T)
• 1x Set of rolled burnt titanium quad exhaust tips
• Installation hardware (gaskets, clamps, brackets)

Product Description

The Invidia HS15STIG3T Q300 Cat-Back Exhaust System is a premium performance upgrade tailored for 2015-2021 Subaru WRX and WRX STI sedans. Featuring mandrel-bent SUS304 stainless steel piping and a flat-bottom muffler design, this exhaust system improves exhaust gas flow compared to the factory setup, helping enhance throttle response, torque, and overall performance. The twin-tuned mufflers and carefully engineered layout optimize back-pressure for a deeper, more aggressive exhaust tone while maintaining drivability.

Eye-catching rolled burnt titanium quad tips provide a striking visual upgrade to the rear of your vehicle, and the direct bolt-on installation makes fitment straightforward using existing mounting points and hangers. This cat-back exhaust is ideal for Subaru enthusiasts who want improved sound, increased performance potential, and a premium exhaust look for their WRX or WRX STI. Fitment is confirmed for 2015-2021 models across AWD trims and turbo engine configurations.