The Agency Power uppipe is made from polished 321 high grade stainless steel. 1/2" thick flanges are used for maximum strength and durability. The AP uppipe includes a new gasket and bolts to connect to the header. New exhaust studs for the upper flange are included for a secure fit to any turbo. 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 with a high performance Agency Power piece you will gain faster turbo spool, quicker throttle response, and a good increase in horsepower.
-Includes bolts, studs, and uppipe to header gasket