On longer tours with your F800S & ST it is your interest if you can communicate with your co-driver. Therefor we run the intercom system interphone. A connection to your navigation system or a cell phone with bloototh is also possible. A connection from rider to rider is possible with up to 500m distance. The newest verson is the Interphone F4 with many improvements compared to it's forerunner. For traveling we recommend navigation systems by Zumo like the Zumo 550 or the TomTom Rider II, special for motorbikes. Our GPS mounting suitable for the >b>F800S is special made for BMW handlebars with inside diameter of 16mm. The open part of the handlebar is usually closed with a plastic plug. The plug will stay in place thanks to the expansion fastener. The external diameter of the part where you mount your GPS is 22,5mm to fit almost any navigation system. For the F800ST we recommend the handlbar mounting for 22mm handlebars + Ram-Ball with M10 x 1,25 thread. With or without hinge in order to move your navigation system in the best position. A brandnew product is the X-Navigator with 43 countries. The BikeCam2 is a high quality easy to use motorcycle video system. Helmet or Bike mounted bullet camera recording systems for bikes, great quality suitable for professional applications including training, racing, track days etc. or just great fun for videoing your favourite rides.