Ultimate Addons Honda CBR1000RR Fireblade Motorcycle Fork Stem Yoke Mount & 3 Prong Adaptor (sku 14872) Fits the Honda Fireblade CBR1000RR. Motorcycle Bike Fork Stem Yoke Mount & 3 Prong Adaptor for Ultimate Addons Case or Cradles. For Stems: 20.5mm-24.5mm (0.81" - 0.96") Ensure the hole is not used for a steering dampening system. This central fork stem yoke mount has been developed for use on motorcycles where a handlebar mounting option is not possible or desirable. This mounting option is for use with the Ultimate Addons range of waterproof cases & cradles and is not a complete mounting option. What do I get? 1 x 20.5-24.5mm Yoke Mount & 1 x 3 prong adaptor