Locks are more than sturdy enough. I originally had one of thoses case in use as a top case. ( Yes, its the Givi monokey system, so with a monokey base plate you can use it as a top case... added bonus). Later I bought a second case. Givi gives you the option of bying spare locks with keys. I bought a set of 3, so now I have 1 key for both cases plus 1 spare lock+key for if I want to by a third top case... or if one lock malfunctions...

The locking of the cases is really good. Haven't had any problem with it so far. And quite a tight fit. With a piece of fabric over te side, case wont close.

you see... same case... as a top case..





Yes, the tail section really has to come of. Unless you're good at designing and making your own "bridge" between the two halfs. The nuts for the bolts in the middle have to be tighted (see arrow on the picture below). Ofcourse there's no room for that unless the entire rear is removed.... I'm not the most technical guy ( only on paper), but still ...I managed... You'll have to unplug all of the electrical plugs ( and cut away the strips that tie the cables to the frame of the bike, easy to replace them ofcourse)



I don't really know what to say about the frame itself. If your idea of sturdy is that it won't move even when you push, pull of shake it, well... then it's sturdy. I can grib the frame and shake the bike violently with it, no problem... unless you mean something else? I really cant compare to other types (brands) of frame.

That rubber piece is in fact a hard plastic part which is essential for the locking . The case rests on the two lower points and "clicks" in to the plastic triangular piece. Will it survive a fall? Hope so.. Honestly I won't try it out for you