Rohloff - PM Bone (8555)

The PM Bone allows mounting of a Rohloff Speedhub on frames (135mm, 142mm, 170mm, 177mm) with a direct post mount brake mount (for 160mm or 180mm discs). In order to derive the hogging moment of the hub over the PM Bone into the frame, a PM axle plate must be used. The PM Bone is mounted between the frame and brake caliper and thus acts like a + 20mm adapter, which requires the use of each 20mm larger disc.