This item is without throttle , you need to use your old one or purchase it separately.
1" handlebar:
Left Handlebar Inner Diameter: 25mm
Right Handlebar Inner Diameter: 28mm
Fitment:For most of 1'' handlebar motorcycles or some kinds of bikes hand grips. Note：The color of the actual items may slightly different from the listing images due to different computer screen, thanks for your understanding.