Spec-D Tuning MFCAT3-WRX02 Subaur Impreza WRX STI 4.5"/3" Stainless Steel Catback Exhaust System Fits 2002-2007 Subaru Impreza WRX STI 2.0L/2.5L engine models only (Does not fit non- turbocharged engine models) Made of high quality T-304 stainless steel ( light weight design ) with mandrel bend 4.5" tip w/ removable silencer with polished finish 3" light-weight piping Direct OE Factory Replacement, Precise Fitment