XForce Cat Back System (WRX/STi 11-21) whiteline Fully assembled pump in new

Fully assembled pump in new OE housing for reliability

Wrinkle black powder coated inlet pipes and heat shields result in a sleek and sporty appearance in any engine bay

Install Guide

Specially designed to not only fit the IE CAI

Full-aluminum construction provides increased heat and pressure tolerance

XForce Cat Back System (WRX/STi 11-21) whiteline Fully assembled pump in newDESCRIPTION XFORCE offers a range of uniquely engineered and designed stainless steel and mild steel bolt on exhaust systems. These exhaust systems bolt directly to existing mounting points making installation easy. They are built to perform well with materials designed for longevity and like all XFORCE exhaust systems they look and sound great! SPECIFICATIONS 304 Stainless Steel Mandrel Bent Pipeworks 3 Center Muffler Splitting to Twin 2. 5 Center