Supertech 32mm Black Nitrided Exhaust Valves Subaru WRX / STI EJ25 2.5L (Set of 8) Forester_2009-2013 3" inch piping diameter leading

3" inch piping diameter leading to the muffler

The PERRIN Transmission Mount Support is a larger version of the factory piece

Safer and more reliable tuning potential

CNC-machined and precision balanced

This Specific Outlet has been double welded on the outside and inside to prevent cracking

Supertech 32mm Black Nitrided Exhaust Valves Subaru WRX / STI EJ25 2.5L (Set of 8) Forester_2009-2013 3" inch piping diameter leadingPart #: 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