I'm thinking of changing my W800 plastic turn signal lights for some aluminium ones. Which should I consider?

Look at this THIS
V

THNX. One question though. Answers in GErman are no problem. Kein Problem!
The original body of the blinker is somewhat oval and in the plate that holds the front light you can see that this oval form is somewhat formed, pushed in if you like and I wonder if another blinker wil fit properly.

Hi Edwin,
on the W650 it will be no problem, but at the W800 you'll need two big washers/blinker.
I don't know, wether there are adapters available.
Also take care for the ground. If your new blinkers have only one wire, they'll need ground over the body.
Mounted on the painted frame may cause problems, another wire to the blinker-threading will help.

Greets, Willi