If you’re unsure of which UDH adaptor you need, use the images below to see the subtle differences between groupsets.

Universal Derailleur Hanger:
The original part has ‘UDH’ printed on it and this is also used on bikes with Shimano groupsets
Use with the Universal Thru Axle

Transmission GX:
Also required for Force XPLR 13-spd, Rival XPLR 13-spd, Eagle 90, Eagle 70 & S1000
Use with the Universal Thru Axle only

Transmission XX/XO:
Also required for Red XPLR 13-spd
Use with the Universal Thru Axle only

Still unsure? Get in touch hello@tailfin.cc


