When added to the Kinetic Grips, this little treasure can make all the difference in the world on a long ride. The Throttle Boss is a small adjustable paddle that is positioned under the palm of the throttle hand allowing the driver to slightly relax their grip and maintain a constant speed. Coordinates with the entire line of Kinetic accessories (all sold separately). Fits all Kuryakyn Kinetic™ line grips. Sold individually. Note: Kuryakyn part number: 6354.