503971 Handlebar reducer sleeves. 1" to 7/8" (22mm)

These MCS handlebar reducer sleeves allow you to install 7/8-inch (22mm) handlebars into standard 1-inch diameter Harley-Davidson type risers. Also known as riser shims, adapter sleeves, or riser fillers, they bridge the gap between metric and imperial bar sizes, opening up a wider selection of handlebar options for your build. The sleeves fit snugly inside your existing risers and provide a secure, wobble-free mount for smaller-diameter bars. A universal fitment makes them suitable for any Harley with 1-inch risers. Ideal for riders looking to run custom or aftermarket 7/8-inch handlebars without swapping out their riser assembly.