The Rohloff PM Bone for torque support on PM 6 and PM 7 frame mounts
Rohloff PM Bone
The PM Bone enables direct torque support on frames with Post Mount disc brake mounts. This requires the CC PM or A12 PM axle plate.
The PM Bone is then bolted between the brake caliper and the frame and therefore acts as an adapter for the next larger disc. This means that with Post Mount 6, a PM direct mount for 160 mm discs, a 180 mm disc is required, and with Post Mount 7, a 203 mm disc. Not compatible with Post Mount 5 and Post Mount 8 mounts.
Alternatively, the PM Bone can also be used with an IS2000 adapter on frames where the brake caliper mount is located on the chainstay. In these cases too, larger discs must be fitted.
Herstellerinformation: ROHLOFF, Mönchswiese 11, 34233 Fuldatal, Germany, https://rohloff.de