22mm-28mm Motorcycle Handlebar Risers Motorcycle Handlebar Mount Clamp Risers Handlebar Heightened "Function: The handlebar lifting kit can easily increase the handlebar height of motorcycles or can easily change the position of the handlebar, lift it up and pull it farther." Just slide the stem extender onto the steerer tube and tighten it, very easy to fit. The handlebar height adapter is made of refined aluminum alloy, high toughness, no deformation, corrosion resistance, sturdy and durable.