SRAM, Eagle 90 T-Type, Rear Derailleur, Speed: 12, Black

SRAM, X01 Eagle AXS, Rear Derailleur, Speed: 12, Red

Shimano, Tourney RD-TY500, Rear derailleur, 6/7sp., SGS, Black, Direct attachment

Shimano, Tourney FT RD-FT35-A, Rear derailleur, 6/7sp., direct attachment, SS

Shimano, GRX Di2 RD-RX825, Rear Derailleur, Speed: 12, Cage: GS, Black, IRDRX825A

SRAM, GX DH, Rear Derailleur, Speed: 7, Cage: Medium, Black