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Rear
Derailleurs

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Box Components (5)

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Front Derailleurs (1)

Rear Derailleurs (129)

Size

28T - 36T (1)

GS Medium (4)

Long (3)

Medium (3)

SGS Long (8)

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Grey (2)

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Buy

SRAM

eTap Battery

£51.00  
Was  £56.00   | Save  £5.00   (9%)
Buy

SRAM

XX1 Eagle AXS 12 Speed Rear Derailleur

£668.00  
Was  £742.00   | Save  £74.00   (10%)
Finance From £11.41/mo
Buy

SRAM

XX1 Eagle 12-Speed Rear Derailleur

£273.00  
Was  £303.00   | Save  £30.00   (10%)
Box MTB
Buy

SRAM

XX1 11-Speed Rear Derailleur

£273.00  
Was  £303.00   | Save  £30.00   (10%)
Buy

SRAM

XX T-Type Eagle AXS Rear Derailleur Cover Kit

£21.00
Buy

SRAM

XX T-Type Eagle AXS 12-Speed Rear Derailleur (Battery Not Included)

£626.00  
Was  £695.00   | Save  £69.00   (10%)
Finance From £10.69/mo
Buy

SRAM

XX SL/XX/X0 T-Type Eagle AXS Rear Derailleur Inner Cage

£33.00  
Was  £36.00   | Save  £3.00   (8%)
Buy

SRAM

XX SL/XX T-Type Eagle AXS Rear Derailleur Setup Key/Cage Lock Assembly Kit With Spring

£14.00  
Was  £15.00   | Save  £1.00   (7%)
Buy

SRAM

XX SL T-Type Eagle AXS 12-Speed Rear Derailleur (Battery Not Included)

£626.00  
Was  £695.00   | Save  £69.00   (10%)
Finance From £10.69/mo
Buy

Shimano

XTR M9120 Shadow+ 12 Speed Rear Derailleur (Double Chainring)

£193.99  
Was  £214.99   | Save  £21.00   (10%)
Buy

Shimano

XTR M9100 Shadow+ 12 Speed Rear Derailleur (Single Chainring)

£193.99  
Was  £214.99   | Save  £21.00   (10%)
Buy

Shimano

XTR M9000 Shadow+ 11 Speed Rear Derailleur

£170.99  
Was  £189.99   | Save  £19.00   (10%)
Buy

Shimano

XT T8000 10-Speed Trekking SGS Rear Derailleur

£76.99  
Was  £84.99   | Save  £8.00   (9%)
Buy

Shimano

XT M8050 Di2 Shadow+ 11 Speed Rear Derailleur

£278.99  
Was  £309.99   | Save  £31.00   (10%)
Finance From £8.58/mo
Buy

Shimano

XT M8000 Shadow+ 11 Speed Rear Derailleur

£89.99  
Was  £99.99   | Save  £10.00   (10%)
Buy

SRAM

X5 8/9-Speed Rear Derailleur

£43.00  
Was  £47.00   | Save  £4.00   (9%)
Available Sizes
Buy

SRAM

X5 10-Speed Rear Derailleur

£50.00  
Was  £55.00   | Save  £5.00   (9%)
Available Sizes
Buy

SRAM

X1 11-Speed Rear Derailleur

£196.00  
Was  £217.00   | Save  £21.00   (10%)
Buy

SRAM

X01DH 7-Speed Rear Derailleur

£246.00  
Was  £273.00   | Save  £27.00   (10%)
Available Colours
Black Red
Buy

SRAM

X01 Eagle AXS 12-Speed Rear Derailleur (Battery Not Included)

£461.00  
Was  £512.00   | Save  £51.00   (10%)
Finance From £9.45/mo
Available Colours
Red Lunar
Buy

SRAM

X01 Eagle 12-Speed Rear Derailleur

£223.00  
Was  £247.00   | Save  £24.00   (10%)
Available Colours
Red Lunar
Buy

SRAM

X01 DH Type 3.0 10-Speed Short Cage Rear Derailleur

£273.00
Buy

SRAM

X01 11-Speed Rear Derailleur

£221.00  
Was  £245.00   | Save  £24.00   (10%)
Buy

SRAM

X0 T-Type Eagle AXS Rear Derailleur Setup Key/Cage Lock Assembly Kit With Spring

£14.00  
Was  £15.00   | Save  £1.00   (7%)
Buy

SRAM

X0 T-Type Eagle AXS 12-Speed Rear Derailleur (Battery Not Included)

£531.00  
Was  £590.00   | Save  £59.00   (10%)
Finance From £9.07/mo
Buy

Shimano

Ultegra R8000 11 Speed Rear Derailleur

From  £80.99  
Was  £89.99   | Save  £9.00   (10%)
Buy

Shimano

Ultegra Di2 R8150 12-Speed Rear Derailleur

£341.99  
Was  £379.99   | Save  £38.00   (10%)
Finance From £9.35/mo
Buy

Shimano

Ultegra Di2 R8050 11 Speed Rear Derailleur

£233.99  
Was  £259.99   | Save  £26.00   (10%)
Buy

Shimano

U8000 CUES Shadow+ 11-Speed Rear Derailleur - GS Medium

£84.99
Available Sizes
Buy

Box Components

Two Prime 9-Speed X-Wide Rear Derailleur

£119.99
Buy

Shimano

Tiagra RD-4700 10-Speed Rear Derailleur (Short Cage)

£33.99  
Was  £39.99   | Save  £6.00   (15%)
Buy

Shimano

Tiagra RD-4700 10-Speed Rear Derailleur (Medium Cage)

£40.99  
Was  £44.99   | Save  £4.00   (9%)
Buy

Box Components

Three Prime 9-Speed X-Wide Rear Derailleur

£84.99
Buy

Shimano

T6000 Deore Trekking 10-Speed Rear Derailleur - SGS Long

£56.99
Available Sizes
Buy

Shimano

Sora RD-R3000 9-Speed Rear Derailleur (Short Cage)

£35.99  
Was  £39.99   | Save  £4.00   (10%)
Buy

Shimano

Sora R3000 9-Speed GS Medium Cage Rear Derailleur

£38.99  
Was  £42.99   | Save  £4.00   (9%)
Buy

Shimano

Saint M820 Shadow+ 10 Speed Rear Derailleur

£134.99  
Was  £149.99   | Save  £15.00   (10%)
Buy

SRAM

SX Eagle Aluminum 12-Speed Rear Derailleur

£76.00  
Was  £84.00   | Save  £8.00   (10%)
Buy

Shimano

SLX M7000 Shadow+ 11 Speed Rear Derailleur

£69.99  
Was  £76.99   | Save  £7.00   (9%)
Buy

SRAM

Rival22 11-Speed Short Cage Rear Derailleur

£56.00  
Was  £62.00   | Save  £6.00   (10%)
Buy

SRAM

Rival22 11-Speed Medium Cage Rear Derailleur

£69.00  
Was  £76.00   | Save  £7.00   (9%)
Buy

SRAM

Rival1 11-Speed Rear Derailleur

£118.00  
Was  £131.00   | Save  £13.00   (10%)
Buy

SRAM

Rival XPLR eTap AXS D1 12-Speed Rear Derailleur (Battery Not Included)

£270.00  
Was  £300.00   | Save  £30.00   (10%)
Buy

SRAM

Rival AXS D1 12-Speed Rear Derailleur (Battery Not Included)

£255.00  
Was  £300.00   | Save  £45.00   (15%)
Buy

SRAM

Red eTap AXS D1 12-Speed Rear Derailleur - Max 36T (Battery Not Included)

£610.00  
Was  £677.00   | Save  £67.00   (10%)
Finance From £10.42/mo
Buy

SRAM

Red eTap AXS D1 12 Speed Rear Derailleur

£610.00  
Was  £677.00   | Save  £67.00   (10%)
Finance From £10.42/mo
Buy

SRAM

Red eTap 11-Speed Rear Derailleur

£529.00  
Was  £587.00   | Save  £58.00   (10%)
Finance From £9.04/mo
Buy

SRAM

Red XPLR eTap AXS D1 12-Speed Rear Derailleur (Battery Not Included)

£580.00  
Was  £644.00   | Save  £64.00   (10%)
Finance From £9.91/mo
Buy

SRAM

Red AXS XPLR E1 Rear Derailleur Carbon Inner Cage

£62.00
Buy

SRAM

Red AXS XPLR E1 1x 13 Speed Rear Derailleur

£700.00
Finance From £14.58/mo
Buy

SRAM

Red AXS E1 Rear Derailleur Carbon Inner Cage

£50.00  
Was  £62.00   | Save  £12.00   (19%)
Buy

SRAM

Red AXS E1 Limit Screw Set

£25.00  
Was  £30.00   | Save  £5.00   (17%)
Available Sizes
Buy

SRAM

Red AXS E1 12 Speed Rear Derailleur

£700.00
Finance From £14.58/mo
Buy

SRAM

Red 11-Speed Rear Derailleur

From  £266.00  
Was  £295.00   | Save  £29.00   (10%)
Buy

SRAM

Red 10-Speed Wifli Aero Glide Rear Derailleur (Medium Cage)

£277.00  
Was  £307.00   | Save  £30.00   (10%)
Buy

SRAM

Rear Derailleur Inner Cage - GX T-Type Eagle AXS

£36.00
Buy

SRAM

Rear Derailleur Frame Sleeve B-Bolt

£11.00
Buy

SRAM

Rear Derailleur Chaingap Adjustment Gauge - B Gap Tool - Compatible With Eagle 50T/52T

£6.00
Buy

Shimano

RX825 GRX Di2 Shadow+ 12 Speed Rear Derailleur (Double Chainring)

£324.99
Finance From £7.22/mo
1 2 3

The Rear Derailleur is the component which shifts the chain on the rear sprocket. Again, there are many different variations and brands of derailleur, with some designed for mountain bike use and some designed for road bike use. Their design however, at a basic level - remains the same, as does their functionality. Deraillerus arew fixed to the bike with a bolt, which secures the derailleur to the derailleur hanger.

Most mountain bikes and road bikes have both a front and rear dearailleuer, but SRAM pioneered a system which is increasingly used, using a 1 x chainring. The rear derailleur has to work incredibly hard during a bike ride, so it’s important that you choose the right derailleur for your bike, and keep your bike's transmission and drivetrain correctly maintained.