Chrome Handlebars Solid Mount Bushings Kit with Riser Bolts for Harley-Davidson Motorcycles Metal Chromed Handlebar Solid Mount Kit with riser bolts. 4 solid chrome bushings for WG Handlebars mount. Each bushing measures 1/2" thick, 1-1/2" O.D. 1-1/8", 1/2" - I.D. Riser bolts are 3-1/2" long. 1-1/2" long fine thread. 1/2" diameter. Fits Harley-Davidson models from 1973 to present and custom application.