By now I know there are G310 R owners and potential owners looking for aftermarket parts and they are slowly trickling in. To start, as you can tell from the title, Evotech is currently working on a Tail Tidy. No exact word on completion but as you can see below it seems well under way:
Evotech's G310R Page BMW G 310 R Tail Tidy - Evotech Performance
BMW G 310 R TAIL TIDY 2016+
CURRENTLY IN DEVELOPMENT
This product is currently in our design studio being developed with all of the usual style and quality we are known for.
Evotech's G310R Page BMW G 310 R Tail Tidy - Evotech Performance