The most reasonably priced component used on the Gsx1300rz Hayabusa 2005 (k5) Usa (e03) 2nd Air is the Washer(6.5x20x1.6).
This Valve Assy,2nd Air is the most expensive of the items that make up this 2nd Air assembly.
A sample from the products for the 2nd Air include: Pipe,2nd Air No.2, Washer(6.5x20x1.6), Pipe,2nd Air No.4, Hose,2nd Air Valve Fr.