Shop rear derailleurs for replacing or upgrading your bike's drivetrain, with Shimano options across a range of speeds and riding setups. Our range includes Shimano Tourney, Altus, Acera, Claris, Sora, Alivio, Tiagra, Deore, 105 and Ultegra rear derailleurs, covering compatible 6/7, 7/8, 8, 9, 10, 10/11 and 11-speed systems. Choose from different cage lengths and derailleur specifications to suit your drivetrain, whether you're maintaining an everyday bike, road bike or MTB.
Altus mountain bike rear derailleur with light action operation and over-size pulleys for a wide gear choice Oversize 13/15-tooth tension and guide pulleys to...
Acera mountain bike rear derailleur with light action operation and over-size pulleys for a wide gear choice Oversize 13-tooth tension and guide pulleys to...
R2000 Claris derailleurs feature an advanced light action for low-friction shifting up or down the block Wide link design for increased rigidity and precise...
TX800 mountain bike rear derailleur with light action operation and over-size pulleys for a wide gear choice Oversize 13-tooth tension and guide pulleys to...
Great value Altus rear derailleur offering crisp performance on- and off-road for 9-speed drivetrains Wide link design increases rigidity and service life 11-tooth pulleys...
Sora derailleurs feature an advanced light action for low-friction shifting up or down the block Wide link design for increased rigidity and precise gear...
Sora derailleurs feature an advanced light action for low-friction shifting up or down the block Wide link design for increased rigidity and precise gear...
Great value Alivio M3100 rear derailleur offering crisp performance on- and off-road for 9-speed drive trains Shadow design with smooth skid plate surface features...
Offering pro-level features, the 10-speed compatible Tiagra rear derailleur gives high performance at a low price Wide link design increases rigidity and service life...
Offering pro-level features, the 10-speed compatible Tiagra rear derailleur gives high performance at a low price Wide link design increases rigidity and service life...
Wide link Shadow design Dyna-Sys 10-speed top normal Deore rear derailleur Double servo-panta mechanism for smooth light action shifting Single tension spring prevents contact...
Deore M5120 Shadow plus 10/11-speed rear derailleur for dependable shifting performance and durability Shadow plus features a super low profile design and optimized slant...
11-speed 105 wide link rear derailleur medium cage - GS Advanced Wide Link design increases rigidity and shifting performance Super stiff for fast and...
Ultegra Shadow design rear derailleur with wide link design gives quick accurate shifts and excellent drivetrain efficiency Sleek appearance with Low profile Shadow design...