Changing handlebars is one of the most common ways to customise a motorbike, and can dramatically impact the appearance, comfort and way you ride. Before ordering new handlebars make sure you know the diameter of the existing bars. Most Sports bikes have 22mm (7/8 inch) bars and Harley-Davidsons and modern Japanese Cruisers have 25mm (1 inch) handlebars. If you choose the wrong size, your grips, risers etc won’t fit and it will be an expensive business to replace all of these. If you don’t know the diameter of your bars, measure the circumference (all the way round the outside) with a tape measure - answer around 79mm – you have 25mm handlebars. Please read our Choosing Motorcycle Handlebars Guide below, for more advice on styles and measurements.