Added to the popular Kuryakyn ISO-Grips, this little jewel 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 one’s throttle hand, allowing the driver to slightly relax the grip and still maintain a constant speed. Muscle stiffness and fatigue are reduced during prolonged cruising. Note: Two-sided rubber pad permits use on both grips for a matched set.