Subaru Impreza WRX & STI 08-11 Decat Exhaust Downpipe
This Subaru Decat Downpipe replaces the standard restrictive downpipe and catalytic converter with a stainless steel, 3" one-piece item. Increasing the bore of the downpipe and replacing the restrictive catalytic converter allows the exhaust gasses to flow much more freely, increasing the power output of the engine.
Manufactured from T304 stainless steel
3" bore narrowing to 2.5" outlet
TIG welded, CNC machined flanges
Boss fitted to accept O2 (lambda) sensors
Compatible with OEM and aftermarket cat back exhaust systems
Fits Subaru Impreza WRX & STi Shark Eye (2008-2011) models.