UDH universal PNA derailleur hanger

The derailleur leg, an essential part connecting the rear derailleur to the frame, is designed to bend or break in the event of a shock, thus preserving the derailleur and the frame.

Previously, each frame required a specific leg, making replacements difficult.

However, with the introduction of the Universal Derailleur Hanger (UDH) standard by SRAM in 2019, this situation has changed. The UDH SRAM aims to unify derailer foot standards, thus facilitating replacements and improving speed change performance.

The derailleur leg PNA universal UDH which we offer you for a very good price quality ratio consists of a hanger and a fixing bolt.

This open standard is compatible with various derailments and is quickly adopted by many brands, thus simplifying the availability of spare parts.

In case of chain lock, the UDH hanger rotates backwards to absorb the impact, with a lip to prevent the chain from getting stuck.

This standard is widely used in high performance ATVs such as the Trek Fuel EX or the Scott Scale RC, with a bike search tool available on the website of SRAM to verify compatibility.

To install or replace a UDH on your bike, follow these simple steps:

1. Pass the chain into the smallest pinion
2. Remove the rear derailleur and the crossing axis from the rear wheel
3. Desser and remove the UDH mounting bolt
4. Remove the UDH
5. Clean the leg
6. Install the new UDH and tighten the bolt to 25 Nm counterclockwise
7. Finally, reinstall the wheel and rear derailleur