A heavy working throttle is not what you want. At Müller no less then 4 ball bearings and 2 PTFE bushings are used for a no friction; minimal play throttle experience. The narrow part that fits inside the handlebar is 22.3mm which can be machined in a lathe to the required diameter for a perfect fit. Single cable action. Installs with 2 included M6 bolts. Comes complete with installation instructions. Note: Cutting of the right side handlebar is required. Note: An installation tool kit is separately available as 950384. Loctite medium and extra strength is advised and must be purchased separately. Note: Two left side handlebar grips are required with identical 1" inside diameter.