Subaru WRX / STI SS 3" Cat-Back Exhaust

$ 825.00

Availability: Ships in 24 hours
Product Code: 512100

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This part is not an emissions-related part and therefore can be used on Emission Controlled Vehicles.


The COBB catback exhaust for the WRX & STI does not deviate from the factory emissions equipment and conforms to the SAE dictated 95-decibel exhaust noise level limit enforced by California, as well as other states in the US. This system is modeled after the stock factory exhaust fitment locations, therefore making it an easy direct bolt on item inclusive of all needed gaskets and hardware.

This exhaust is for the 2002-2007 WRX and STI. Click the + sign under “Confirmed Applications” to see if this STI/WRX exhaust will work for your vehicle.

Click here for 2015- Present Subaru WRX exhaust

See here for our 2015-Present Turboback Subaru STI exhaust

Or use the “Configure Your Vehicle” button at the top of the page to shop by specific year and model.


The COBB Tuning catback exhaust is heralded often for its quality, performance, and subtlety. Engineered to be a vehicle specific unit, the catback exhaust uses the highest quality stainless steel piping and a muffler designed for direct and efficient flow of exhaust to achieve the highest performance while still retaining a stock like appearance and sound level.

Subaru WRX / STI SS 3" Cat-Back Exhaust
  • Straight-through Optimum Flow Design
  • 304 Stainless Steel for Corrosion Resistance
  • TIG Welded
  • Impressive Sound
  • Complies with SAE 95db Requirements