Supertech 32mm Black Nitrided Exhaust Valves Subaru WRX / STI EJ25 2.5L (Set of 8) has-openbox ultimately creating better throttle response

ultimately creating better throttle response and more power

Exhaust Tip Diameter: 120mm (4

Coilover kits are built to order

AEM also incorporated a failsafe that provides output to either decrease timing

Alignment: Adds 0

Supertech 32mm Black Nitrided Exhaust Valves Subaru WRX / STI EJ25 2.5L (Set of 8) has-openbox ultimately creating better throttle responsePart #: SEVN 1010 8 This is a set of 16 Supertech Stainless Steel Black Nitrided Valves for Subaru STi EJ25 2. 5L Engines. Supertech has been around for a long time in the Valvetrain industry, and has race proven their product year after year, and backed it up with world records and first place trophies. We use Supertech in our top level engine builds for good reason. We suggest Supertech Valvesprings and Retainers and actually use them in some of our