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." Motorbike Handlebar Risers is A safe and reliable way to fit a narrower bar to a wider stem. Simply place one shim each side of clamp area on handlebar and insert into stem, tighten as normal.