Bike Derailleurs

Bike Derailleurs

The derailleur is a crucial component of your bike's drivetrain, responsible for moving the chain between gears in coordination with your shifter. This mechanism ensures smooth, quick, and precise gear changes, enhancing the overall riding experience.
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SRAM Rival AXS E1 Rear Derailleur
SRAM
Rival AXS E1 Rear Derailleur
  • AXS enabled
  • Compatible with both 1x and 2x drivetrains
  • Integrated chain management technology
£216.19
RRP £285.00 Save 24%
SRAM Force AXS E1 Front Derailleur
SRAM
Force AXS E1 Front Derailleur
  • SRAM Yaw Technology
  • Faster, more accurate front shifting
  • Auto trim function
  • AXS enabled
£216.00
RRP £240.00 Save 10%
SRAM Red AXS XPLR E1 Rear Derailleur
SRAM
Red AXS XPLR E1 Rear Derailleur
£594.79
RRP £700.00 Save 15%
Shimano GRX 825 Di2 12-Speed Rear Derailleur
Shimano
GRX 825 Di2 12-Speed Rear Derailleur
£256.09
RRP £325.00 Save 21%
SALE
Shimano RD-M8100 XT 12-Speed SGS Rear Derailleur
Shimano
RD-M8100 XT 12-Speed SGS Rear Derailleur
£86.99
RRP £110.00 Save 21%
Shimano GRX 815 Di2 11-Speed Rear Derailleur
Shimano
GRX 815 Di2 11-Speed Rear Derailleur
£203.29
RRP £285.00 Save 29%
SALE
Shimano M8000 XT 11-Speed Shadow+ GS Rear Derailleur
Shimano
M8000 XT 11-Speed Shadow+ GS Rear Derailleur
£59.39
RRP £100.00 Save 41%
SRAM Force AXS XPLR E1 Rear Derailleur
SRAM
Force AXS XPLR E1 Rear Derailleur
  • Built for gravel
  • Hangerless Interface and Full Mount attachment
  • Replaceable and rebuildable parts
£360.89
RRP £420.00 Save 14%
SALE
CeramicSpeed OSPW RS 5 Spoke SRAM Red/Force AXS Pulley Wheels
CeramicSpeed
OSPW RS 5 Spoke SRAM Red/Force AXS Pulley Wheels
From £341.39
RRP £474.99 Save 28%
CeramicSpeed OSPW RS 5 Spoke SRAM Red/Force AXS Pulley Wheels
CeramicSpeed
OSPW RS 5 Spoke SRAM Red/Force AXS Pulley Wheels
£470.00
Shimano GRX FD-RX820 12-Speed Double Front Derailleur
Shimano
GRX FD-RX820 12-Speed Double Front Derailleur
£41.59
RRP £55.00 Save 24%
CeramicSpeed OSPW RS Alpha Disc SRAM Red/Force AXS Pulley Wheels
CeramicSpeed
OSPW RS Alpha Disc SRAM Red/Force AXS Pulley Wheels
From £375.80
RRP £515.00 Save 27%
Shimano GRX 827 Di2 12-Speed Wireless Rear Derailleur
Shimano
GRX 827 Di2 12-Speed Wireless Rear Derailleur
  • Fully Wireless
  • Dual Spring Chain Stabiliser
  • Crash Recovery Function
  • Removable Battery
£408.49
RRP £429.99 Save 5%
SRAM Rival AXS E1 Front Derailleur
SRAM
Rival AXS E1 Front Derailleur
  • AXS enabled
  • Refined cage shape
  • SRAM Yaw cage movement and auto trim
£138.49
RRP £170.00 Save 19%
CeramicSpeed OSPW Aero Alpha For Shimano 9250/8250
CeramicSpeed
OSPW Aero Alpha for Shimano 9250/8250
£599.95
RRP £609.99
Shimano GRX 825 Di2 12-Speed Front Derailleur
Shimano
GRX 825 Di2 12-Speed Front Derailleur
£131.09
RRP £185.00 Save 29%
SALE
CeramicSpeed OSPW RS Alpha Disc SRAM Red/Force AXS Pulley Wheels
CeramicSpeed
OSPW RS Alpha Disc SRAM Red/Force AXS Pulley Wheels
£433.39
RRP £515.00 Save 16%
Shimano 105 FD-R7100 12-Speed 28.6/31.8mm Front Derailleur
Shimano
105 FD-R7100 12-Speed 28.6/31.8mm Front Derailleur
£36.09
RRP £45.00 Save 20%
Shimano 105 FD-R7100 12-Speed 34.9mm Front Derailleur
Shimano
105 FD-R7100 12-Speed 34.9mm Front Derailleur
£32.59
RRP £45.00 Save 28%

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Popular Bike Derailleur Brands

The leading brands seen on road and mountain bikes are Shimano and SRAM, while Campagnolo is another prominent brand, specialising in road cycling. Rear derailleurs handle gear shifts at the back of the bike and are compatible with 7 to 12-speed systems, while front derailleurs manage the gear changes at the front, typically offering 2 to 3-speed options.

At Sigma Sports find mountain bike derailleurs designed to take a few knocks from uneven trails or weight saving road bike derailleurs that won't let you down when you are racing.  We've also got these handy guides to adjusting front and rear derailleurs. 
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