Compatible with all UDH derailleur hangers
Pin stiffening for derailleur mounting
High-strength CNC machined aluminum
Weight: 17.3 grams

- Particularly suitable for use on E-bikes and e-MTBs
- The Stiffshifter stabilizes the UDH hanger from the outside
- Support is provided via the rear derailleur; thanks to the Plug & play configuration, it is installed in a few minutes
- A pin acts directly on the mounting bolt of the rear derailleur
- This way the derailleur hanger is further supported, offering greater stiffness in the UDH system for significantly more precise shifts
- Effectively prevents deformation or breakage of the derailleur hanger
- Interchangeable derailleur hangers were invented as a predetermined breaking point for the frame
- The frame's hanger for a UDH hanger is 18 mm thick and therefore extremely stable
- The wall thickness of the Stiffshifter at the mounting point is 1.5 mm
- In case of a violent impact against the rear derailleur or the Stiffshifter, the Stiffshifter breaks to prevent damage to the frame

How to install Stiffshifter

1. Loosen and remove the thru-axle
2. Remove the UDH bolt
3. Insert the Stiffshifter pin into the Rear Derailleur bolt
4. Mount and tighten the stiffshifter with the UDH bolt.
5. Reinsert the quick-release axle
6. Installation completed