The most reasonably priced component used on the Gsxr1000z 2004 (k4) Usa (e03) Steering Stem is the Nut.
A sample from the products for the Steering Stem include: Emblem,limited, Emblem,s, Washer(8.5x18x1.6), Bolt(8x35).
With a quantity of four pieces, the Bolt is the most used part in the STEERING STEM diagram.
