good alternative to Urban Rider

I came looking for a cheap Motorradnavi to this solution.
the TomTom Navi's own one gets currently used already relatively low. In conjunction with this holder can thus be creating a good and inexpensive Navi.
For those who are technically minded there is even the possibility to install the software on a normal Rider XL.

The bracket holds himself well (partially almost too good, it is relatively difficult to dismantle the Navi after the ride back)
The installation is fine, though not as well thought out as the original Navi. Too often I would complete the bracket Do not remove prefer, therefore 1 star deduction. For the price, however, perfectly fine!