Universal Derailleur Hanger 11 & 12 Speed
The universal Transition derailleur hanger is compatible with all Transition models manufactured on or after 2015* up to 2021.
The 2021 on Patrol, Spire alloy, Sentinel alloy and Spur frames use the SRAM Universal Derailleur Hanger (yes, it's also called "Universal Derailleur Hanger" but it’s different).
This is the latest version which works with both 11 and 12 speed drivetrains.
(*Excludes the TR500, Triple, Rapture, PBJ and BLT).