Motorcycle Handlebar Risers 22/28mm Universal Motocross Handle Bar Riser Lift Adapter Kit The motorcycle handlebar riser mount is easy to install, no complicated guidance required, it is universally fit for most of the motorcycles. provides riders with a better position and control on." 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.