Yes. Those are frame mounting shims. #5 in this diagram:https://www.realoem.com/bmw/enUS/showparts?id=0573-USA---K569-BMW-K%2075%20RT%20(0565,0573)&diagId=46_1268
Here's the frame mounting page from the BMW manual. It doesn't say which method for a K75RT but since all models of the K75 have the same frame the one that I boxed in red is the right way to do it.Lossely install 1, 2 and 4.Torque 1 & 2.Shim 3. Install and torque 3.Install 5.Torque 4 & 5.Link to frame mounting page: https://i.imgur.com/oYuTZ2L.jpg
. . . but since all models of the K75 have the same frame the one that I boxed in red is the right way to do it.Lossely install 1, 2 and 4.Torque 1 & 2.Shim 3. Install and torque 3.Install 5.Torque 4 & 5.Link to frame mounting page: https://i.imgur.com/oYuTZ2L.jpg