When SRAM launched the Universal Derailleur Hanger, its aim was to address the headache of replacing frame-specific hangers. The replaceable derailleur hanger was a brilliant idea, but there were hundreds of them and they had become more complex and expensive. So in 2019, the US component giant delivered the SRAM UDH – Universal Derailleur Hanger – and created one of the most highly compatible mountain bike components ever made.
To quote the Shamen's '90s hit Ebeneezer Goode, the humble rear derailleur hanger was 'very much maligned and misunderstood' but this tiny piece of essential componentry is 'something of a genius' designed not only to attach the derailleur to the frame but also be a sacrificial lamb in the event of an impact, protecting the frame and derailleur. It also has the important duty of holding the derailleur in just the right place so that the drivetrain and frame are perfectly synchronized. The SRAM Universal Derailleur Hanger gives a secure and consistent connection essential for crisp shifting and overall drivetrain performance, but the SRAM UDH also has a host of built in safety features.
