The Bike It Aluminium CNC Multi-Stage Bar Riser is ideal for those bigger 28.6mm bars.Multi-Stage Handlebar Riser KitAluminium handlebar riser kitsPrecision quality CNC machined componentsPremium polished finishFeatures base mount, bar mount and three sizes of spacerIncludes three sets of M8 fitting bolts for various height options4 height options (+5mm, +10mm, +15mm, +30mm)Uses the original bar top clampThe Bike It Aluminium CNC Multi-Stage Bar Riser is a precision quality CNC machined components and has a premium polished finish and made from quality aluminium. It comes with the base mount, bar mount and 3 different sizes of spacer. It also includes three sets of M8 fitting bolts for various height options. This part uses the original bar top clamp.4 height options (+5mm, +10mm, +15mm, +30mm)