The Nameless Performance Wave Spring Bypass Valve features several technical innovations that distinguish it from other compressor bypass valves.

Innovation one is the all-billet aluminum construction. Unlike pretty much every other bypass valve, the body of this valve is machined from single block of aluminum. That means fewer parts to bolt together, and more importantly fewer possible sources of air leaks.

The second major innovation is the use of a wave spring instead of the traditional coil spring. The wave spring is significant because it can generate a very high spring rate in a very short amount of travel. This valve is the only one that we know of that uses this spring technology. The benefit is that it can hold very high boost levels, while still quickly opening and venting air when you release the gas pedal and close the throttle.

The valve piston is sealed in the bore by not one but two o-rings, virtually eliminating leaks through the cylinder bore. The top fitting can swivel to any angle for maximum installation flexibility, and the very low profile means this valve will fit under the hood where many larger valves will not.

Black anodized finish.

A fresh CBV (compressor bypass valve) gasket is included.

Fits all 2002-2007 Subaru WRX, 2004-2021 WRX STI, and 2004-2008 Forester XT.