Cobb Cat-back Exhaust Hardware kit - 2011-2021 Subaru WRX / STI Sedan

Better Airflow for the GV/VA WRX/STI — Done Right

The Cobb intake upgrade for the 2011-2021 Subaru WRX/STI improves airflow to the turbocharger over the factory setup by reducing restriction in the intake path. Less restriction means the turbocharger works with a stronger air supply, building boost from a better foundation.

Designed Around the Cobb OTS Maps

Every Cobb intake product for the GV/VA WRX/STI is developed alongside the OTS maps on the Accessport. The intake and the tune are calibrated together — which means the airflow numbers the map assumes are exactly what the Cobb intake delivers. Running a third-party intake against a Cobb map introduces uncertainty; running the Cobb intake removes it.

Bolt-In Installation at the Factory Airbox Location

Installation is at the factory airbox location on the GV/VA WRX/STI — no cutting, no relocation, no custom heat shielding. The Cobb intake system replaces the factory airbox and filter as a unit, and all mounting points line up with factory locations.

Key Features

• Platform: 2011-2021 Subaru WRX/STI
• Calibrated to work with Cobb Accessport OTS maps
• Bolt-in installation at factory airbox location

Fitment Notes

• Platform: 2011-2021 Subaru WRX/STI
• Direct bolt-in replacement — no modification required
• Confirm color/variant from product title or dropdown before ordering

Straight From Subispeed

The Cobb intake system for the GV/VA WRX/STI is the correct supporting hardware for any Cobb Accessport tune on this platform. If you are building a GV/VA WRX/STI on the Cobb platform, this is the intake piece that belongs in the build.

What's Included

• Cobb intake system — 2011-2021 Subaru WRX/STI

About Cobb Tuning

Cobb Tuning has been developing performance parts and tuning solutions for Subaru vehicles since 1999. Based in Austin, Texas, Cobb built their reputation on the Accessport — the most widely used Subaru ECU tuning device on the market — and expanded that into a full ecosystem of intake, exhaust, drivetrain, and engine bay accessories engineered specifically for the platforms they support. Every Cobb product is developed in-house and validated on their own test vehicles before it reaches customers. Subispeed carries the full Cobb catalog because their engineering standards and platform-specific development process consistently produce parts that work exactly as advertised.