Summary: I own a 2013 HD Electra Glide Ultra Classic and purchased the Garmin Zumo 660 from Amazon because of the better price. HD has an identical version called Road Tech Garmin Zumo 660, but more on that a little later: Pros - ease of installation. I removed the fairing and with a friend, attached the Zumo 660 in about 10 minutes. Replaced the fairing and the GPS was up and running. I adjusted the brightness and it works great. No problems.
Summary: This cover is a nice feature, but you really don'e need it. The Zumo motorcycle mounts power plug comes with a cover. I got this not knowing that, and wanting to protect the power connections. By the way, it is easily stolen.
Summary: it is what it is, overpriced piece of plastic that covers the mount.. but I needed it and it works and there isnt another option. So if you need it buy it, over packaged piece of plastic, that does what it says it does.
Summary: Well I have used the garmin zumo 450 for about 6 years.. I felt it was time to upgrade. The 660 is ok, the lane assist and speaks street names is a very nice. The mp3 player is ok, but my zumo 450 with blue tooth adapter sounds so much better. I do use a cardio scala g4 with a Aria helmet with both units, The phone use is a definite plus. All in all its ok. But not worth the money. I ride everyday and just wished it worked as well as my 450..
Summary: Does what it says, but not well. 1. bad: firmware is old and outdated. 2. bad: map is VERY slow when zooming in/out. it takes forever to redraw. 3. bad: Blouetooth connectivity with headset is sketchy. sometimes it take 5-10 attempts to get it working properly. while it connects, it goes MONO with bad quality sound and only after few attempts it connects well (scala rider). connectivity with phone has no problems.
Summary: I have had a lot of GPs in my day and I bought this for my motorcycle and I can tell you it's really not worth the money. This has almost the same maps and features as the $100 model. Yes it has motorcycle features but they are not worth it in my opinion. First, the maps are not as great as tom tom. The roads only show text when your zoomed almost all the way in. The nighttime maps seem kinda difficult to read sometimes.