SO EASY RIDER v4 Waterproof GPS SatNav protective case fits RAM Motorcycle - Motorbike Mounts (sku 53689)SO EASY RIDER v4 Weatherproof waterproof GPS SatNav protective case suitable for use with Motorcycle Mounts which use a standard 4 hole AMPS layout like RAM, Techmount, SW Motech & Migsel. (Note: mount NOT included) This water proof protective case includes it's own velcro mounting straps which can be attached to your motorbike or even to your arm. The case now includes the standard 4 hole AMPS layout allowing you to attach the case to an existing