Biltwell Murdock Risers For Harley Features: Murdock risers are designed to fit most stock Harley-Davidson and comparable aftermarket fork trees with 3-1/2 riser mounting holes measured on center They are not compatible with top trees with integrated risers Investment-cast steel one-piece top clamp Top clamp bolt pattern matches stock Harley-Davidson risers, so retro-fitment with stock and aftermarket speedometer/tach binnacles is easy Available in a variety of heights Top clamp measures 5-1/4 in total width Fits 1 diameter bars