Bike Rear Derailleurs

Like our front derailleurs, you can also find a laundry list of high quality bike rear derailleurs on our site which will help you repair or upgrade your gear setup and make it work with you, rather than being something you have to battle against on a ride.

Also known as mechs, you can find complete rear derailleur assemblies, or order the distinct bolt sets and cages you require.  Brands ranging from Campagnolo to Tacx and beyond are available in this category, so if you have a particular make and model of derailleur you want to replace then this should be simple to achieve.

Different sizes, speeds and disciplines of bike rear derailleur are on offer, with both mountain and road bike-oriented products to pick. For mountain bikes, the construction of the derailleur will be tougher so that it can survive the punishing conditions it will face off the beaten path. For road bikes, smooth shifting and light weight construction are at the top of the agenda.

Get help from our experts by contacting Bikeparts.co.uk online and you can find out all there is to know about rear derailleurs and pinpoint the right component for your bike.

Shimano RD-TY300 6/7-speed direct-mount rear derailleur
£10.69

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

Shimano

Shimano TY300 6 / 7-speed rear derailleur (direct attachment) SIS rear index shifting SGS cage can handle wide range gearing and 34 tooth sprocket...

View full details
£10.69
Shimano RD-M4000 Alivio 9-spd Shadow design rear derailleur, SGS, top normal, silver
Save £20.10
£44.99
£24.89

Shimano RD-M4000 Alivio 9-spd Shadow design rear derailleur, SGS, top normal, silver

Shimano

Great value Alivio rear derailleur offering crisp performance on- and off-road for 9-speed drivetrains Shadow design with smooth skid plate surfac...

View full details
£44.99
£24.89
Save £20.10
Shimano RD-4700 Tiagra 10-speed rear derailleur, SS
Save £3.09
£39.99
£36.90

Shimano RD-4700 Tiagra 10-speed rear derailleur, SS

Shimano

Offering pro-level features, the 10-speed compatible Tiagra rear derailleur gives high performance at a low price Wide link design increases rigid...

View full details
£39.99
£36.90
Save £3.09
Shimano CT-S510 Alfine chain tensioner - silver
Save £6.10
£29.99
£23.89

Shimano CT-S510 Alfine chain tensioner - silver

Shimano

Alfine chain tensioner for use with vertical dropouts Stable chain tension is achieved by using a single pulley guide For use with single front ch...

View full details
£29.99
£23.89
Save £6.10
Shimano RD-TY300 6/7-speed rear derailleur with mounting bracket
£17.90

Shimano RD-TY300 6/7-speed rear derailleur with mounting bracket

Shimano

Shimano TY300 6 / 7-speed rear derailleur (bracket attachment) SIS rear index shifting SGS cage can handle wide range gearing and 34 tooth sprocke...

View full details
£17.90
Shimano RD-TX800 Tourney TX Rear Derailleur, Direct Mount, Silver
Save £7.09
£21.99
£14.90

Shimano RD-TX800 Tourney TX Rear Derailleur, Direct Mount, Silver

Shimano

TX800 mountain bike rear derailleur with light action operation and over-size pulleys for a wide gear choice Oversize 13-tooth tension and guide p...

View full details
£21.99
£14.90
Save £7.09