The chrome caps for the gear oil filler screw are an optical improvement for your BMW.
You simply push them on. The caps fit into the gear oil filler screw with Allen head and will fit any other screws with the same Allen size.
Not for R 1200 GS
Chrome cap II was created for covering the gear oil filler...
Daytona Heated Grips 12V for 22mm (7/8 Inch) handle bars...
On one side of the cable is a Mini-DIN-Angle-Plug...