TomTom Rider 550 motorcycle GPS on sale for over $100 off on Amazon | Mashable
TomTom Rider 550 4.3 Inch Touchscreen GPS Vehicle Navigation System - Newegg.com
TomTom GPS - Rider 550
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