These bars are designed to fit stock Harley-Davidson triple trees with removable handlebar risers, or their aftermarket equivalent. Made from 1-inch O.D. x 0.120” wall seamless 4130 chromoly tubing. All bends are created with internal mandrels on a CNC bender to reduce flat spots in the radiuses, and all welded joints are precision mitered and TIG welded. The threaded bungs on the bottom of Low Drag Bars accept 1/2” x 13 t.p.i. hardware. If the riser-mounting holes in your fork’s top tree are not 3.5 inches (89mm) wide center to center, Biltwell Low Drag bars will not fit. If the holes for riser hardware (either rubber isolator or solid mount type) in your top tree are not 1/2” (13mm), Low Drag bars will not fit. Because our Low Drag bar’s height is similar to stock handlebars, cable and wiring probably won’t require modification. Dimpled for use with stock Harley Davidson hand controls.