-A cover made of aluminium - with BMW emblem (not shown).
-Just put it into the hole over the screw in the wheel.
-An o-ring keeps this part firmly in place.
Note: Please measure and choose diameter below. Because of the shape and the size of the rear wheel it’s not very easy to measure the diameter with a caliper. Use something you can wrap with tape until it just fits into the hole of your rear wheel. You can use the head of a big screw, the handle of a screwdriver, or a wrench insert for example. Then measure the diameter of the wrapped item with a caliper or something similar. The usual diameters are: 31.8mm (very common), 30.5 mm, and 32.3 mm.
Hornig R1100S|R1150R|Rockster|R1100R Rear Wheel Plug w/BMW Logo
Produced by Hornig of Germany