Eightpins Stiffshifter derailleur dropout reinforcement Shimano Di2 XT / GRX / Deore 12v - XT Linkglide 11v
Eightpins Stiffshifter derailleur dropout reinforcement Shimano Di2 XT / GRX / Deore 12v - XT Linkglide 11v
In stock. Delivery in 24 hours
Shipping costs (UNITED KINGDOM): 23.90
Expected arrived: 30/09/2026
UDH derailleur hanger protection against breakage and deformation
Does the rear derailleur make noise after a fall or transport? Broken UDH derailleur hanger? Is the e-bike's derailleur bouncy during shifting under load? Stiffshifter is the SOLUTION to your problems!
Even a slight impact against the rear derailleur or on the trail can bend the UDH derailleur hanger, putting an end to your ride. Moreover, UDH derailleur hangers have a thin structure and can break easily in the event of a fall or collision and offer insufficient resistance to the high forces exerted by modern e-MTBs. Stiffshifter stiffens the UDH derailleur hanger and protects the rear derailleur from misalignment, ensuring clean and reliable shifting on every trail.
Compatible with all UDH derailleur hangers
Bolt-on stiffening for securing the derailleur
High-strength CNC-machined aluminum
Weight: 17.3 grams
- Particularly suitable for use on E-bikes and e-MTBs
- The Stiffshifter stabilizes the UDH derailleur hanger from the outside
- Support is provided via the rear derailleur; thanks to its Plug & play configuration, it can be installed in just a few minutes
- A bolt acts directly on the mounting bolt of the rear derailleur
- This provides additional support to the derailleur hanger, offering greater rigidity in the UDH system for significantly more precise shifting
- Effectively prevents deformation or breakage of the derailleur hanger
- Replaceable derailleur hangers were invented as a predetermined breaking point for the frame
- The frame hanger for a UDH derailleur hanger is 18 mm thick and is therefore extremely stable
- The wall thickness of the Stiffshifter at the mounting point is 1.5 mm
- In the event of a violent impact against the rear derailleur or the Stiffshifter, the Stiffshifter breaks to prevent damage to the frame
Compatible with:
Di2 Deore XT - RD-M8250 12x
Di2 RD-M8260 12x/11x Linkglide
Di2 Deore - RD-M6250 12x
Di2 RD-M6260 12x/11x Linkglide
Di2 GRX - RD-RX827
Di2 RD-RX717 12x
How to install Stiffshifter
1. Loosen and remove the thru axle
2. Remove the UDH screw
3. Insert the Stiffshifter pin into the rear derailleur screw
4. Mount and tighten the stiffshifter with the UDH screw.
5. Reinsert the quick-release axle
6. Assembly completed
Responsible for the EU:
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