Multi-Stage Handlebar Riser Kit. Aluminium handlebar riser kits. Precision quality CNC machined components. Premium polished finish. Features base mount, bar mount and three sizes of spacer. Includes three sets of M8 fitting bolts for various height options. 4 height options (+5mm, +10mm, +15mm, +30mm) Uses the original bar top clamp. Available for 22.2mm and 28.6mm bar sizes.