Rear luggage rack base
If you want to install the TK50 Topcase but your K75 or K100 does not have the luggage rack already installed, then this is the part that you need. It is supplied with all of the hardware needed to install. The only thing that you will need is a drill and a wrench to tighten the bolts. The tail section is pre-marked on the underside, showing you exactly where to drill four holes.
Equivalent to the BMW part number 46 54 2 300 350 (46542300350)