Invidia 2015+ Subaru WRX / STI Gemini/R400 Single Layer Quad Titanium Tip Cat-Back Exhaust

This Invidia exhaust is built for real gains you can feel in the seat. Smooth bends and smart muffler design improve flow and throttle response while keeping the note tight and controlled. R400 systems are tuned for a deep, refined tone without drone, perfect for daily use and weekend sprints. The single-exit layout trims weight and simplifies flow for fast spool and strong midrange. This setup pairs well with the Wrx platform and responds nicely to basic bolt-ons and a clean tune. Quality materials and precision welding help resist heat and corrosion. The result is consistent fitment, solid hardware, and a system that performs without constant attention. Expect better response off the line, stronger pull through the midrange, and a tone that feels right for a quick street car. Bolt-on installation with standard tools in most cases.

About Invidia

Invidia builds performance exhausts with a focus on flow, durability, and sound. Their systems use precision mandrel bends, quality TIG welds, and carefully tuned mufflers to deliver real gains on the street and track. Backed by decades in the sport compact scene, Invidia parts are known for consistent fitment and a clean, purposeful tone.

Vehicle Fitment

Subaru WRX Base 2015
Subaru WRX Base 2016
Subaru WRX Base 2017
Subaru WRX Base 2018
Subaru WRX Base 2019
Subaru WRX Base 2020
Subaru WRX Limited 2015
Subaru WRX Limited 2016
Subaru WRX Limited 2017
Subaru WRX Limited 2018
Subaru WRX Limited 2019
Subaru WRX Limited 2020
Subaru WRX Premium 2015
Subaru WRX Premium 2016
Subaru WRX Premium 2017
Subaru WRX Premium 2018
Subaru WRX Premium 2019
Subaru WRX Premium 2020
Subaru WRX STI Base 2015
Subaru WRX STI Base 2016
Subaru WRX STI Base 2017
Subaru WRX STI Base 2018
Subaru WRX STI Base 2019
Subaru WRX STI Base 2020
Subaru WRX STI Launch Edition 2015
Subaru WRX STI Limited 2015
Subaru WRX STI Limited 2016
Subaru WRX STI Limited 2017
Subaru WRX STI Limited 2018
Subaru WRX STI Limited 2019
Subaru WRX STI Limited 2020

Part #: HS15STIGM4ST

Note: Possible generic images used for reference only.