Supertech 32mm Black Nitrided Exhaust Valves Subaru WRX / STI EJ25 2.5L (Set of 8) Forester_2009-2013 This increases the amount of

This increases the amount of force required to make the body roll

A UV protectant solution was added to the ABS injection to help with sun damage

Another negative side effect of lowering your car can be the induction of bump-steer

3" inch piping diameter leading to the muffler

Supertech 32mm Black Nitrided Exhaust Valves Subaru WRX / STI EJ25 2.5L (Set of 8) Forester_2009-2013 This increases the amount ofPart #: 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