[AKStrom]

As someone who has a pair and bought the last set of E41 spare lids in North America several years ago, these have been long-discontinued. Might want to scrounge up any spares that you can find now, as they'll only get scarcer.

 

[AKStrom]

Yup. Already bought a pair of extra red lenses.

What parts tend to wear out?

Good. The only other thing I've had a lot of problems with is the rubber seals. Thankfully you don't need to order those from Givi and a local hardware store would have something that would work.

And, obviously, if a lid snaps off it's game over at this point unless you buy entire spare cases.