SRAM Universal Derailleur Udh - Derailleur Hanger

SRAM - UDH

UDH is the abbreviation for Universal Derailleur Hanger. It is an attempt to standardise the design of a derailleur hanger and eliminate hundreds of existing standards. Today, each bicycle brand designs its own derailleur hanger and may have several incompatible derailleur hangers for its own models. If you apply this idea to hundreds of bike brands, you have a very big problem if you as a rider break your derailleur hanger and need to find a replacement part. The UDH is designed to simplify this. If you have a bike with a UDH-compatible frame and your derailleur hanger breaks, you can pick up a replacement UDH derailleur hanger at almost any bike shop.

The UDH is an axle-specific derailleur hanger that is similar to some existing derailleur hangers but has some performance improvements. For example, one feature prevents the chain from falling off the smallest sprocket. If you hit a stone with the rear derailleur, the UDH rotates backwards to protect the frame and rear derailleur. The design of the UDH corresponds exactly to the specifications of all current MTB rear derailleurs on the market today. So not only does it work with any rear derailleur, but these rear derailleurs are already optimised for the UDH.

Dimensions

• Weight: 26g

Highlights

• UDH stands for Universal Derailleur Hanger and is a standard for derailleur hangers that harmonises the multitude of existing standards.
• The aim of the UDH is to reduce the complexity of finding replacement derailleur hangers for bicycles by using a standardised design.
• UDH-compatible frames allow riders to easily and quickly find replacement derailleur hangers when needed, without having to rely on specific brands or models.
• The UDH offers performance improvements such as preventing chain drops from the smallest sprocket and protecting the frame and derailleur in the event of impacts.
• By conforming to the specifications of all common MTB rear derailleurs on the market, the UDH is not only compatible, but already optimised for maximum performance and reliability.