Check out any of the fifteen Steering Stem components enlisted.
The most reasonably priced component used on the Gsxr750x 1986 (g) (e01 E02 E04 15 16 17 18 21 22 24 25 34 39 53) Steering Stem is the Lock Washer.
A sample from the products for the Steering Stem include: Nut,stem Head, Lock Washer, Dust Seal,steering Upr, Taper,roller Bearing.