Rohloff Monkey Bone -10 for 160 mm rotors – IS to PM adapter
The Rohloff Monkey Bone -10 for 160 mm rotors (8553-10) is the IS-to-post-mount brake adapter and torque support for XXL SPEEDHUBs in fat bike frames (CC 190 mm / A12 197 mm) with an IS2000 brake mount.
Why the Monkey Bone -10?
Brake adapter and torque support. The OEM2 axle plate locks into a recess in the Monkey Bone, so the hub torque goes straight into the frame through the brake mount. 
Offset for XXL hubs. The -10 version is shaped for the wider 190/197 mm fat bike hubs. 
Long bolts included. Two M6x30 bolts for fat bike frames come in the box. 
160 mm rotor. For a post-mount caliper with a 160 mm rotor on an IS2000 frame mount.
Mounting in short
Fix the Monkey Bone to the IS mount (6 Nm), fit the post-mount caliper loosely, install the wheel so the OEM2 axle plate sits fully in the Monkey Bone recess, then align and tighten the caliper (6 Nm).
Who is it for?
- Fat bike riders with an XXL SPEEDHUB. Frames with an IS2000 brake mount on the seatstay.
- Builders of XXL SPEEDHUB bikes. The Rohloff-specified part for this combination.
Compatibility
| Hubs | SPEEDHUB 500/14 XXL with OEM2 axle plate: CC 190 mm, A12 197 mm |
|---|---|
| Frame brake mount | IS2000 (International Standard) |
| Brake caliper | Post mount |
| Rotor size | 160 mm |
| Bolts | 2x M6x30 bolts included; caliper bolts M6x16 (usually supplied with the brake) |
| Torque | 6 Nm (frame and caliper bolts) |
| Not compatible | IS calipers; frames with integrated/direct post mount |
Frequently asked questions
Do I need the -10 or the normal Monkey Bone?
The -10 versions are for XXL hubs (CC 190 mm, A12 197 mm). For hubs from 135 to 177 mm, use the Monkey Bone 160 (8553).
Can I use it with a quick-release (CC) axle?
Yes, but the anchoring point must be behind a line parallel to the dropout slot through the axle. With the A12 thru axle this does not need to be checked.
I want a 180 mm rotor – which part?
The Monkey Bone -10 for 180 mm rotors (8554-10).
About Rohloff
Rohloff AG designs and builds the SPEEDHUB 500/14 in Fuldatal, Germany: a 14-speed gear hub with a 526% gear range that has proven itself for more than 20 years on touring, tandem, cargo and e-bikes.
BoodaBike (Massive Bikes, Budapest) is an official Rohloff service centre, trained by Rohloff, and an official European distributor of Rohloff hubs and genuine spare parts. Not sure which part fits your hub? Send us the serial number and a photo of your hub and we will check it for you.