Driven Racing grips are a two-ply grip designed to reduce vibration, arm pump, and hand fatigue, all while adding a custom look to any bike. Made from an outer ply of PVC designed to stabilize the grip surface surrounding a second layer of Kraton gel to absorb vibration. The end result is a grip that is comfortable on long rides, track days, and for racing. Comfortable and attractive grips. Two-ply grip manufactured from PVC-coated Kraton gel with alloy collars. 6061 billet collars and rings. Interchangeable assembly; aluminum collars and grip material can be ordered separately. No adhesive required. Fits 7/8" or 1" bars. 4.84" inside length. Open end design (Driven Bar Ends sold separately). Replacement collars and grip material available in a wide selection of colors (replacement parts sold separately).