Rear Derailleurs

SRAM rear derailleurs use a 1:1 acuation ratio, meaning that 1mm of cable movement causes 1mm of derailleur movement. Shimano uses a 2:1 ratio, so Shimano and SRAM rear derailleurs are not interchangeable.

From basic bike repairs to quality bike upgrades, we have a good range of Shimano rear derailleurs available both on-line and in-store.

A Shimano rear derailleur designed for a given number of gears can also be used on drivetrains with less gears. This applies from 6 speed through to 9 speed drivetrains (and 10-speed road). So a 6 speed drivetrain is compatible with a 6, 7, 8 or 9 speed rear derailleur. A 7-speed drivetrain with a 7, 8 or 9 speed rear derailleur etc. The exceptions to this interchangeability are 5-speed drivetrains (now rare) and Dyna-Sys (Mountain Bike) 10-speed drivetrains. The Dyna-Sys rear derailleurs are not interchangeable with any others.

Shimano RD-2400 Claris 8x2 Rear Derailleur

1878
!
8-speed road rear derailleur with light action spring and wide link design.

 

Shipping Weight: 391g.

Shimano RD-2400 Claris 8x3 Rear Derailleur

1877
!
8-speed road rear derailleur with light action spring and wide link design. For use with triple cranksets.

 

Shipping Weight: 391g.

Shimano RD-4601 Tiagra 10x2 Rear Derailleur

1026
!

Shimano Tiagra 10-speed road rear derailleur for double cranksets.

Can handle up to a 30 tooth rear sprocket.

(The longer arm version of this derailleur, designed for use with triple cranksets, can handle a 32T rear sprocket.)

Shipping Weight: 250g.

Shimano RD-5800 105 11-Speed Rear Derailleur Medium Cage Black

0401
!
11-speed compatible rear derailleur for maximum cassette sprocket size from 28 to 32 teeth.

Wide-link design for reliable and fast shifting.

Weight: 243g. Shipping Weight: 341g.

Shimano RD-5800 105 11-Speed Rear Derailleur Short Cage Black

0459
!
11-speed compatible rear derailleur for maximum cassette sprocket size of 28 teeth.

Wide-link design for reliable and fast shifting.

Weight: 227g. Shipping Weight: 325g.

Shimano RD-FT35 Tourney 6/7-Speed Axle Mount Rear Derailleur

1952
!
Axle-mount rear derailleur for bikes without a derailleur hanger built onto the frame. Suitable for 6 and 7 speed drivetrains.
Shipping Weight: 322g.

Shimano RD-M370 Altus 9-Speed Rear Derailleur Silver

2839
!
Economical rear derailleur suitable for bikes with 6, 7, 8 or 9 rear sprockets and triple cranksets.
Shipping Weight: 400g.

Shimano RD-M592 Deore 9x3 Long Cage Rear Derailleur Black

2410
!

High performance shadow-style 9-speed rear derailleur. RD-M592.

Weight: 280g. Shipping Weight: 384g.

Shimano RD-M640 Zee Rear Derailleur 10 Speed DH

2298
!
The 10-speed Zee RD-M640 features Shadow Plus technology that significantly reduces chain noise and offers a more stable drivetrain. There are two Zee rear derailleurs available: this DH spec which handles a maximum rear sprocket of 28t and is single-chainring specific, and the Freeride spec which handles a rear sprocket up to 36t.
Shipping Weight: 422g.

Shimano RD-M640 Zee Rear Derailleur 10 Speed Freeride

1137
!
The 10-speed Zee RD-M640 features Shadow Plus technology that significantly reduces chain noise and offers a more stable drivetrain. There are two Zee rear derailleurs available: the DH spec which handles a max rear sprocket of 28t, or this Freeride spec which handles a rear sprocket up to 36t.
Shipping Weight: 428g.

Shimano RD-M675 SLX 10x2 Rear Derailleur

1905
!
TEMPORARILY UNAVAILABLE.
Dyna-Sys 10-speed Shadow Plus MTB rear derailleur for use with double or single cranksets.

Maximum rear sprocket: 36 teeth. Front difference: 22 teeth. Total Capacity: 35 teeth. Clutch system to reduce chain slap.

Shipping Weight: 399g.

Shimano RD-M786 XT 10x2 Shadow+ Rear Derailleur

1039
!
Thanks to new, more direct Shadow cable routing and the reduced cable tension, Dyna-Sys is less sensitive to contamination, cable stretch and cable routing concerns, which all adds up to more consistent performance in even the roughest terrains - the kind of trails that rattle molars loose and make suspension components work overtime to keep pace.
Shipping Weight: 387g.

Shimano RD-M786 XT 10x3 Shadow+ Rear Derailleur

1598
!

Dyna-Sys rear derailleur with "ratcheting" derailleur cage to reduce chain slap.

Weight: 261g.

Shipping Weight: 391g.

Shimano RD-M8000 XT 11sp Medium

298
!
Medium cage length for single for single chainring setups or double setups with a maximum 10T difference between chainrings.
Rider tuned for sharp and silky shifts.

Shimano RD-TX35 Tourney 7-Speed Direct-Mount Rear Derailleur

2496
!

The Shimano RD-TX35 Tourney TX Rear Derailleur offers Shimano shifting performance at a low price for 6 and 7 speed drivetrains.

Weight: 321g.

SRAM X4 8x3 Rear Derailleur Black

2338
!
SRAM 1:1 Actuation Ratio rear derailleur for 8-speed drivetrains. Long arm for triple cranksets (can also be used on double or single cranksets).

The X4 rear derailleur combines the best elements of SRAM shifting with a stylish design in an affordable price point. Intelligent material selection yields a lightweight high performance derailleur. A compelling option for your 8-speed (or 7-speed) shifting needs. Weight: 302g.

SRAM X5 9x2 Rear Derailleur Silver

2339
!
A pure simplified performer from the trails to the street.

 

Weight: 304g.

SRAM X7 9x3 Rear Derailleur

73503
!
Long arm rear derailleur for triple cranksets. New technologies, finish and family strategy create a cohesive performance story. X7 intends to deliver the highest value MTB components in their class.

 

Shipping Weight: 250g.

SRAM X9 10x3 Rear Derailleur Grey

0468
!
SRAM X9 10-Speed Rear Derailleur Grey, with Long Cage for 3 x 10 gear systems.

Please note the photo is of the medium cage version. The long cage is 98mm between jockey wheel centres.

Weight: 218g. Shipping Weight: 322g.

Shimano RD-TY500 Tourney 6/7-Speed Axle Mount Rear Derailleur

2869
!

An economical replacement rear derailleur for drivetrains with 7 or 6 rear sprockets. Fits to axle rather than derailleur hanger.

Shipping Weight: 400g.

Sunrace RDM37 7sp rear derailleur

2772
!

7 speed budget rear derailler. 13 to 30T cassette range, long cage, direct mount

 

Sunrace RDM56 8sp rear derailler

2771
!
8 speed budget rear derailler. Cassette range 13 to 34T, long cage, direct mount.