Amazon.com: TomTom Rider 550 Motorcycle GPS Navigation Device, 4.3 Inch, with World Maps, Motorcycle Specific Winding and Hilly Roads, Updates via WiFi, Traffic and Speed Cams, Compatible with Siri and Google Now :
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TomTom Rider 400 Portable motorcycle navigator with 4.3" display — includes free lifetime map and traffic updates at Crutchfield