Ergon GXR Circular Grips Fast Grip, Closed Loop XC and marathon riders who chase grams without wanting to give up feel or control have a real option here. The GXR Circular is a slip-on grip made entirely from recycled Air Cell rubber, collected from color changes and test runs on the standard GXR production line, then formed into a fresh grip through the same process that made the original worth buying. The result is a tapered, left-and-right-specific profile with hand-matched grip zones that let you ease up on your grip strength, which translates directly to less arm pump on long efforts. No inner core, no clamp collar, and carbon bar compatible - everything about this grip is pointed at the rider who wants as little between their hands and the trail as possible, without compromising on shock absorption or ergonomics. Features Recycled Air Cell rubber construction made entirely from Air Cell material reclaimed during standard GXR production, part of Ergon's Green Lab Circular project Hand-matched grip zones asymmetric surface texturing creates left- and right-hand-specific grips that put tack and support exactly where your palm and fingers contact the bar No inner core or clamp slip-on design keeps weight to approximately 90g per pair (including end plugs) and works on carbon bars without risk of crush damage Tapered ergonomic profile optimized form reduces the gripping force needed to hold the bar, cutting fatigue on extended XC and marathon efforts SGS-certified rubber compound thoroughly tested for harmful substances, meeting or exceeding safety and quality standards Replaceable end plugs included swap them out if damaged without replacing the full grip Specifications Grip Type Slip-on (no clamp, no inner core)Outer Diameter Small: 32mm / Large: 34mm Length Clamp Style None (slip-on)Core Diameter22. 2mm Compound / Durometer Recycled Air Cell rubber (SGS-certified); durometer not specified Weight~90g per pair (Small, including end plugs)Intended Use XC, Trail | Ergon | Gxr Circular Grips | Black | | Rubber