UDH hanger for all current adult Chromag frames, or any other UDH compatible frame for that matter. The UDH is designed to optimize shift performance across all bikes as well as create a sensible solution for replacing damaged hangers. The UDH has been widely adopted throughout the cycling industry with hundreds of models already featuring it.
Non-UDH is a hanger and nut assembly for Chromag 12mm boost frames (pre UDH) and the Minor Threat.
For Surface Voyager click here.
If in doubt you can check your Chromag rear axle or contact us!