XForce Equal Length 4-2-1 Header and Up-Pipe - Stainless Steel (WRX/STi 94-07/Forester 97-08)DESCRIPTION Unlock your Subaru WRXs performance with the high flow XFORCE stainless steel performance headers and up pipe. Constructed of 304 grade stainless steel and TIG welded throughout to aid reliability and aesthetics, the XFORCE 1 header design helps reduce back pressure and improve performance thanks to the tuned length 4 2 1 configuration. Also included in the kit is the high flow stainless up pipe which further aids performance and