Avon Velvet Air Cushion Grips With Boss Throttle Assist For Harley With Throttle By Wire Avon Velvet Air Cushion Grips are incredible soft velvet like surface give a comfortable ride. A vibration dampening grip that utilizes air pockets inside of the grip body. Made with Kraton polymer and finished off with billet aluminum end caps and collars. Features: Air ride for your hands The most comfortable grips on the market today for shock resistance in your hands and upper body Air pockets inside the grip absorb unwanted vibrations Billet aluminum ends and rings Will not work with models equipped with air reservoirs in the bars Features a throttle assist so you can relax your grip