GSC EJ series Chrome Polished Super Alloy Exhaust Valve-33mm Head(+1mm)-SET of 8 Oiling 14mm Top and Bottom O-Ring

14mm Top and Bottom O-Ring

These upgrades make the G4X Monsoon a true powerhouse in a small shell

2010 Subaru Impreza WRX STI Special Edition 2

2013 Subaru Impreza WRX STI Limited 2

GSC EJ series Chrome Polished Super Alloy Exhaust Valve-33mm Head(+1mm)-SET of 8 Oiling 14mm Top and Bottom O-RingStem 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.