Outfront Motorsports 575 Complete Cylinder Head Package N25 Heads STi High Strength DOM Steel Tube

High Strength DOM Steel Tube (3X thicker)

and the only feature that rolled over from the Gen4 range was the mounting orientation

Increased rigidity increases both camshaft and bucket longevity

Clutch Disc Diameter (Millimeters): 240

Outfront Motorsports 575 Complete Cylinder Head Package N25 Heads STi High Strength DOM Steel TubeThe Outfront Motorsports 575 Cylinder Heads are the perfect entry level replacement heads if you had a failure requiring you to completely replace heads or if you just want brand new heads outright. These heads are a great option for you basic bolt on engines up to 575 BHP. The Outfront 575 Heads start with new OEM Genuine Subaru head castings. A multi angle valve job is performed as well as a fresh resurface. The heads go through multiple cleaning