The most reasonably priced component used on the Gsf1250s Bandit 2007 (k7) Usa (e03) Handlebar is the Cap(od:10).
In this schematic the "Bolt" is used most often.
A sample from the products for the Handlebar include: Cap(od:10), Guide,throttle Cable No.2, Cable Assy,throttle No.1, Screw(6x110).
