Description The Universal Derailleur Hanger – or UDH – consolidates thousands of mountain bike derailleur standards. It offers unparalleled derailleur protection. And perfect alignment. Guaranteed. The UDH is designed to rotate rearward in the event of impact and features the ability to “re-rail” the chain back onto the small cog. The UDH works with all commercially available MTB and E-MTB drivetrains from Shimano to Box to Sunrace.
