Hi @Cschnur - Thanks for your patience as we looked into this information.

For 2020 and later DRT 2.1s, you will want to use a Wheels Manufacturing Derailleur Hanger 430. They are not currently available for sale on our website, but your local REI might have them in stock and Wheels Manufacturing also currently has inventory. 

Let us know if you have any additional questions and we'll be happy to help!

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