Everything you need to know about the Universal Derailleur Hanger (UDH)
From frame-specific to universal
That problem is now a thing of the past, courtesy of the UDH, an innovation from US bike parts manufacturer SRAM. The UDH replaces the infinite number of different hangers. This development makes attaching the derailleur much easier. When a cyclist with a UDH-compatible frame breaks the hanger, they can find a replacement UDH in almost any shop. To integrate this UDH into the frame, manufacturers just need to provide a specific shape.
(From left to right: the UDH on Falcn RS, Grifn A, E-Grifn and Grifn RS):
Construction
Moreover, the UDH also means optimising shifting performance on all bikes. Indeed, by standardising the fixed position of the derailleur, the UDH ensures a better and more consistent shifting experience. In addition, the UDH will pivot backwards in the event of an impact, providing protection for the frame and derailleur. The design falls right within the specifications of any major MTB rear derailleur. Finally, the UDH prevents the chain from getting caught between cassette and dropout. When the chain slides off the smallest sprocket onto the cassette, a hook-shaped lip pushes the chain back on.
Ridley as a trendsetter
Grifn A
Top-of-the-line modern aluminum bikeJust like the Grifn RS and the Grifn, the aluminum Grifn A combines the speed of a road bike with the comfort of a gravel bike. With the Grifn A, you have the option for tires up to 38 millimeters, and if you opt for a 1x drivetrain, you can even go up to 40 millimeters. The geometry and sizing are identical to the carbon counterpart, ensuring the same balanced riding experience on all terrains.
Discover the Grifn A