12mm Hexagon Hole GPS Mount fits Honda Blackbird & Kawasaki Motorcycles for TomTom Rider (sku 19774) Alternative mounting option for TomTom Rider & Garmin Zumo motorcycle GPS SatNav systems. 12mm (0.47") Hexagon Hole fitting GPS mount base for Honda Blackbird and many Kawasaki Motorcycles. Unique central yoke nut fitting for sports bikes - British engineered - made from Anodised Aluminium. Simple allen key fitting. Mount base gives you a 1" (25mm) ball fitting which is compatible with RAM motorcycle mounts, Ultimate Addons & SW-Motech solutions. NB: Not compatible with steering dampening systems. This is an alternative mounting option designed to replace the standard handlebar option provided with the GPS system - dock not included.