Siebenrock Oil Filler Funnel
Ordered as it states “threaded”, true enough, but is too small to thread to the opening on my 2018 R1200 GSA, which is in the ordering information. Other than that, it does on-fold nicely and stayed in during the oil re-fill process, and does stow collapsed easily, and was easy to clean...three stars as it did not thread into the oil fill opening.