Murdock O/S RiserInvestment-cast one-piece steel bar clamp accepts 1-1/8" O.D. handlebars 0.120" (3 mm) wall x 1" O.D. 4130 chromoly uprights CNC lathe-turned mounting bases accept 1/2-13 t.p.i. stock and aftermarket mounting hardware Mounting holes on 3.5" centers to fit most stock and select aftermarket H-D fork trees Pullback Murdock risers feature mandrel-bent uprights for two inches of rearward bar offset—perfect for reducing reach for shorter riders TIG welded and hand polished before polishing Stainless-steel 5/16-18 t.p.i. bar clamp hardware