Used Rear derailleurs

Sram GX Eagle Lunar

12-speed

Shimano Deore XT RD-M8100

12-speed

Shimano Tourney TX RD-TX800

7-speed, 8-speed

Shimano Tourney RD-TY300 rear derailleur 6/7-speed direct mount

6-speed

Shimano Alivio RD-M3100

9-speed

Sram GX Eagle AXS Lunar (Battery Not Included)

12-speed

Shimano Altus RD-M310

7-speed, 8-speed

Shimano rear derailleur GRX RD-RX822 12-speed SGS

12-speed

Shimano Ultegra Rd-R8000 GS

11-speed

Shimano SLX RD-M7100

12-speed

Shimano Acera RD-M30208

8-speed

Sram Force XPLR AXS D2

12-speed

Shimano Deore RD-M5100

11-speed

Shimano XTR RD-M9100 rear derailleur 11/12-speed SGS

12-speed

Shimano Tiagra RD-4700 rear derailleur 10-speed

10-speed