Stock V-Twins such as Harley-Davidson and Indian motorcycles come with rubber handlebar riser bushings, which are okay for stock size and height handlebars. When taller or larger aftermarket diameter handlebars are installed, the stock bushings are much too flexible and can become a dangerous combination. Many companies make stiffer motorcycle riser bushings out of a myriad of materials such as delrin, nylon, and urethane, but our man on the street Jeff G. Holt expands on the positive effects of using aluminum riser bushings like these USA-made versions from The Speed Merchant.
