Made by Lightech for BMW. These are off my Gen 4 RR but also fit - K63-S1000R, K67-S1000RR, K69-S1000XR
In black with the ?M? logo in white. These are ?98 new, will take ?50 including postage in the UK
Yes. Wheel out. replace the blocks with these. Get them mostly aligned. Wheel in. Complete alignment. Torque it all up. Recheck chain slack and adjust till in the ideal range.