Motorcycle fork stem yoke mount for the TomTom START 60 GPS SatNav series. Weather resistant protective case with a central fork stem mount for holes 13.3-14.7mm (0.52"-0.58"). This central fork stem yoke mount has been developed for use on motorcycles where a handlebar mounting option is not possible or desirable. Designed to fit sports, super bike, endurance and touring motorbikes using the cylindrical bore wall (steering head tube) of the fork stems. BuyBits new improved fit GPS case - fits SatNav devices with a maximum size of 165mm x 105mm x 24mm (6.5" x 4.1" x 0.9") . New "EDGE to EDGE" touch sensitive lens - view and control the SatNav while in the case. Offers protection from damp weather/light rain showers. Covered zip. Charging cable access. Supplied with additional support pads. Case un-clips easily for security. Motorcycle Fork Stem Yoke Mount fits Stems: 13.3-14.7mm (0.52"-0.58"). Uses the 1" Ball fixing. Light-weight - made from Aluminium. Attaches easily to the steering head tube of fork stem. Easy to fit and completely removable. Includes a 2-prong adaptor to join mount to case.Fitting instructions: Measure the hole - this option is designed to fit stems that measure 13.3-14.7mm (0.52"-0.58"). Check that the stem cover can be removed leaving a central hole for mount to fix in. Drop Fork Stem Motorcycle attachment into the hole of stem and tighten. The split shaft will expand to fit the inside wall of fork stem. Use an allen key to create a tight fit. When fitting the case to the mount, engage the 2-prong attachment system, firmly pushing together until it clicks. Some force will be required.