10 Best Rear Derailleurs For Mountain Bikes

10 Best rear derailleurs for mountain bikes - December 2025

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Last Updated: 10-12-2025

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SHIMANO Black Acera Rear Derailleur RD-M360

SHIMANO

9.8

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21% Off

SHIMANO,Black,ERDM3100SGS Alivio Alivio M3100 rear derailleur, 9-speed, Shadow design, SGS long cage

SHIMANO

9.6

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Best value

20% Off

SHIMANO Acera RD-M370 Altus SGS Rear Derailleur - Black, 9 Speed

SHIMANO

9.5

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Sram RDPX4L Rear Derailleur, Black

Sram MTB

9.2

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Shimano Tourney TX RD TX800 7/8-Speed Rear Derailleur, Black 2016 Mountain Bike

SHIMANO

9.1

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RainFlowwer Bike Rear Derailleur 6/7 Speed RD-TY300 Direct Mount for Mountain Bicycle

RainFlowwer

8.8

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Hsthe Sea Mountain Bike Rear Derailleur 7/8/9 Speed for MTB Bikes Direct Mount type

Hsthe Sea

8.6

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Bike Rear Derailleur, 7/8/9,10,11 Speed Mountain Bike Rear Derailleur, 7/8/9/10 Speed Road Bike Rear Derailleur, Direct Mount Rears Derailleurs(Mountain Bike-10 speed)

ENGWE MTB

8.4

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Bike Rear Derailleur, 7/8/9,10,11 Speed Mountain Bike Rear Derailleur, 7/8/9/10 Speed Road Bike Rear Derailleur, Direct Mount Rears Derailleurs(Mountain Bike-7/8/9 speed)

ENGWE MTB

8.2

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12% Off

Bike Rear Derailleur, 7/8/9,10,11 Speed Mountain Bike Rear Derailleur, 7/8/9/10 Speed Road Bike Rear Derailleur, Direct Mount Rears Derailleurs(Road Bike-7/8/9/10 speed)

ENGWE MTB

8.1

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SHIMANO Black Acera Rear Derailleur RD-M360

SHIMANO,Black,ERDM3100SGS Alivio Alivio M3100 rear derailleur, 9-speed, Shadow design, SGS long cage

SHIMANO Acera RD-M370 Altus SGS Rear Derailleur - Black, 9 Speed

Sram RDPX4L Rear Derailleur, Black

Shimano Tourney TX RD TX800 7/8-Speed Rear Derailleur, Black 2016 Mountain Bike

RainFlowwer Bike Rear Derailleur 6/7 Speed RD-TY300 Direct Mount for Mountain Bicycle

Hsthe Sea Mountain Bike Rear Derailleur 7/8/9 Speed for MTB Bikes Direct Mount type

Bike Rear Derailleur, 7/8/9,10,11 Speed Mountain Bike Rear Derailleur, 7/8/9/10 Speed Road Bike Rear Derailleur, Direct Mount Rears Derailleurs(Mountain Bike-10 speed)

Bike Rear Derailleur, 7/8/9,10,11 Speed Mountain Bike Rear Derailleur, 7/8/9/10 Speed Road Bike Rear Derailleur, Direct Mount Rears Derailleurs(Mountain Bike-7/8/9 speed)

Bike Rear Derailleur, 7/8/9,10,11 Speed Mountain Bike Rear Derailleur, 7/8/9/10 Speed Road Bike Rear Derailleur, Direct Mount Rears Derailleurs(Road Bike-7/8/9/10 speed)

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