The derailleur is what moves your chain up and down gears, working with your shifter to change gears. It is an essential part of your drivetrain and can help your bike feel smoother and shifts faster and more accurately. For e-bikes with manual gear shifting, discover our range of replacement derailleurs. Ensure that you match your derailleurs like-for-like for compatibility, sticking with manufacturer-approved replacements. 
Sram X5 RR Mech 8-9 Speed Rear Derailleurs
Sram X3 RR Mech 7-8 Speed Rear Derailleurs
Shimano RD-M7000 SLX 11-Speed Shadow+ Design Rear Derailleur GS
Shimano RD-R7000 105 11-Speed Rear Derailleur, GS, For Low Gear 28-34T
Shimano Tiagra RD-4700 10 Speed Rear Derailleur - GS 
Shimano RD-M3000 Acera 9 Speed Rear Derailleur SGS
Shimano RD-M360 Acera Rear Derailleur SGS
Shimano RD-R2000 Claris 8-Speed Rear Derailleur GS