Your Subaru WRX or STI needs more power. One way to do this is by adding a high quality header to your car. No other company manufacturers high quality, power producing, and cost effective parts like Agency Power. The all new Agency Power stainless steel header kit is now available for your 2002 and up Subaru WRX and STI. This header fits either the 2.0L or 2.5L engines. This header is made from 304 stainless steel and includes half inch thick flanges. The headers have a special designed collector to give perfect flow into the uppipe providing faster turbo spool and increased horsepower. The header can work with the factory uppipe or is sold with the Agency Power stainless steel uppipe. Installing the header will not only gain you about 15 wheel horsepower, it will also change the tone of your Boxxer engine to a deeper and more aggressive sound. It is recommended to change the gaskets when installing this header kit. 

 This uppipe is made from 321 high grade stainless steel. Completely polished, the uppipe uses 1/2 inch thick flanges for maximum strength connecting to your factory or Agency Power aftermarket header. The AP uppipe includes a new gasket and bolts to connect to the header. The top side of the uppipe connecting to the turbo includes new exhaust studs for a secure fit to the factory or aftermarket turbo. We recommend purchasing an OEM gasket when installing. The all TIG welded uppipe includes a bung for your factory or aftermarket EGT gauge.The uppipe is designed to replace the catalytic converter in the WRX and increase air velocity in the STI which has no cat. By replacing the uppipe, you gain faster turbo spool, quicker throttle response, and a increase of almost 10 wheel horsepower. The Agency Power uppipe is designed to fit on all Subaru WRX and STI from 2002 to 2014.

For questions on fitment, installation, or the product, please contact one of our highly skilled sales associates.