Supertech Black Nitride Valves for EJ WRX/STi Select::Intake 37.00mm Short (Set of 8) (SIVN-1014-2-8) Includes both LH and RH

Includes both LH and RH sides with a glossy carbon fiber finish

GrimmSpeed exhaust manifold gaskets for Subaru WRX and STi is 22% thicker than stock and 100% stainless steel including the fire-ring

The base calibration is pre-configured for the OEM CAS

• CNC 19mm Hex Locking Pins

Supertech Black Nitride Valves for EJ WRX/STi Select::Intake 37.00mm Short (Set of 8) (SIVN-1014-2-8) Includes both LH and RHSupertech black nitride exhaust and intake valves for EJ20 EJ25 Subaru WRX and STi. These valves are available in various sizes to match your head diameter. Sold as a set of 8 or individually as needed. Please do all your research and consult your engine builder if necessary! Black nitride valves are made from one piece forged stainless steel then go through a special hardening process to lessen the friction between the valve and guide. Vehicle