The Nut is the cheapest item from this partsfiche.
A sample from the products for the Steering Stem include: Nut, Bearing(30x55x17), Seal,steering Lwr, Stem,steering.
With all the components that make up the GSXR1000 2011 (L1) USA (E03) STEERING STEM assembly. The Bolt is the most frequently specified with four applications.