Outbound Lighting Handlebar Clamp Shim Description: The Outbound Lighting Handlebar Clamp Shim works to reduce the native handlebar clamp diameter found on Outbound Lighting handlebar mounts. This specially molded shim securely fits within slotted spaces molded into OEM handlebar clamps for a solid connection. Features: Handlebar clamp shim for Outbound Lighting mounts Molded shape retains position and clamps solidly Specifications: Handlebar clamp diameter: 25.4mm