BMW R Series Airhead. Swing Arm and Drive Shaft

Here is my listing for a BMW Airhead Swing Arm and Drive Shaft. The arm came of a 1978 R80. I believe this will fit most of the larger R series Airheads. R75 R80 R90 R100. If you are in the process of swapping out yours then I'm sure you'll know enough to determine if it suits your model of bike. The shaft feels good. No Notching....I've attached plenty of pictures, message me if you need any measurements or close ups of other areas. Postage covers UK mainland only. I've included Global Shipping seems to work ok.. Obviously I've no idea what price that it will calculate though..Thanks for reading.