GSC Power-Division Exhaust Valve Guides Stopper Style - Subaru Models (inc. 2002-2014 WRX / 2004-2021 STI) PDM_brake-ducting-kits connecting a 3-inch cat-back to

connecting a 3-inch cat-back to the OEM downpipe requires custom work at the joint

the Injen unit will provide the turbocharger with an unobstructed flow of filtered air straight to the turbocharger

Made using durable mandrel-bent aluminum materials

high-performance driving conditions

GSC Power-Division Exhaust Valve Guides Stopper Style - Subaru Models (inc. 2002-2014 WRX / 2004-2021 STI) PDM_brake-ducting-kits connecting a 3-inch cat-back toGSC Power Division Exhaust Valve Guides Stopper Style Subaru Models inc. 2002 2014 WRX 2004+ STI RallySport Direct carries a great selection of performance engine and valvetrain upgrades brought to you by GSC Power Division. These are the GSC Power Division Exhaust Valve Guides. Featuring durable bronze construction, these vales guides are also the Stopper Style so they won't get pushed in too far. These are a stronger option when compared to OEM