Universal 7/8'' 22mm Aluminum Motorcycle Handlebar Risers Mount Clamps "improves the handling of the motorcycle and increases steering sensitivity Easy Installation: The motorcycle handlebar riser is designed to be easily installed without the need for any drilling or welding. Its compact and small size enables hassle-free installation" 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.