Kuryakyn 6251 Handlebar Universal Throttle Boss

Regardless of what type of bike you ride, the Throttle Boss™ will make riding any distance more comfortable.  Designed to fit any type or size grip, the Throttle Boss™ can be installed in seconds to provide a cushioned "platform" to rest one's palm.  When not in use, it can be quickly removed (without tools) & stowed in a jacket pocket, tool bag, etc.