GSC EJ series Chrome Polished Super Alloy Exhaust Valve-33mm Head(+1mm)-SET of 8 Oiling have been waiting years for

have been waiting years for

2010 Subaru Impreza WRX STI Special Edition 2

and N25 cylinder heads found on the 04+ STI and other EJ257 applications

14mm Top and Bottom O-Ring

6:1 Custom CP UNLESS you select a different Block Configuration in the pull down

GSC EJ series Chrome Polished Super Alloy Exhaust Valve-33mm Head(+1mm)-SET of 8 Oiling have been waiting years forStem Diameter (mm) 6. 0mm Overall Length (mm) 104. 25mm Head Diameter (mm) 33mm GSC Power Division Super Alloy Exhaust Valves for EJ20 25 Turbo are for those running high horsepower, high EGT set ups that need a valve that will last in 2000F conditions. The Super Alloy Exhaust valves have chrome polished stems to create a smooth, durable finish for added life and better lubricity, especially when paired with the GSC Manganese bronze valve guides.