If you have a bicycle frame which has an international standard (IS2000) disc brake mount, you can replace the long torque arm and the standard axle plate with only one OEM2 axle plate and a support bold.
This is a very attractive option for weight watchers.
If you want to use the disc brake as well, you need to mount an additional "bone".
There are different "bones" available for use in conjunction with a disc brake.
| Part No. | Description: |
|---|---|
| 8550 | SPEEDBONE (58g) |
| 8227 | CC OEM2 axle plate (40g) |
| 8228 | TS OEM2 axle plate (48g) |
| 8228L | *TS OEM2 axle plate "long" (53g) |
| 8225 | CC PM axle plate (55g) |
| 8583 | Monkey Bone for 160mm disc rotor (24g) |
| 8584 | Monkey Bone for 180mm disc rotor (33g) |
| 8555 | PM-Bone (25g) |
| 8552 | OEM2-adapter for fender/luggage rack bolt (4g) |

Rohloff Speedbone and Rohloff Speedhub CC OEM2 axle plate.

Monkey Bone for Rohloff Speedhub OEM2 axle plate and 160mm disc brake rotor.
*The TS OEM2 axle plate "long" offers the possibility to mount a trailer or a bicycle kick stand on the left side of the SPEEDHUB. The thread of the bold is long enough to handle even spacious designed dropouts and the cap nut will still fit perfectly.
If permission has not been granted by the frame manufacturer to mount the Rohloff SPEEDBONE or the support bolt through the disc brake mount, then mounting of the OEM2 versions is at your own risk.
Some manufacturers promote this feature even on their web site such like Ullmann frames.