UNIVERSAL THROTTLE BOSS BY KURYAKYN MFG# 6251
Source: Custom Chrome
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 on. This allows the driver to vary or maintain a speed without keeping a tight grip on the throttle, reducing muscle fatigue and discomfort. Removes quickly without tools to stow in a jacket pocket, tool bag, etc. Fits any twist grip throttle.