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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Shimano GRX 717 Di2 Wireless Rear Derailleur
Shimano
GRX 717 Di2 Wireless Rear Derailleur
£341.99
RRP £379.99 Save 10%
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%
Campagnolo Super Record 13 Speed Front Derailleur
Campagnolo
Super Record 13 Speed Front Derailleur
  • Precise Shifting: Fluid, efficient and reliable in any pedalling conditions
  • Removable battery with easy magnetic port charging
  • Position sensor ensures optimal alignment with selected sprocket or chainring
£475.00
RRP £496.99
Campagnolo Super Record 13 Speed Rear Derailleur
Campagnolo
Super Record 13 Speed Rear Derailleur
  • 13 Speed Wireless
  • Durability and Fast Charging
£602.89
RRP £677.99 Save 11%
Campagnolo Super Record 13 Speed Direct Mount Rear Derailleur
Campagnolo
Super Record 13 Speed Direct Mount Rear Derailleur
  • 13 Speed Wireless
  • Durability and Fast Charging
£644.09
RRP £680.00 Save 5%
SRAM Rival XPLR E1 Rear Derailleur Cage Assembly Kit
SRAM
Rival XPLR E1 Rear Derailleur Cage Assembly Kit
  • Full replacement cage assembly
  • Outer and inner cages, damper, and pulleys
£135.00
SRAM Force XPLR E1 Rear Derailleur Cage Assembly Kit
SRAM
Force XPLR E1 Rear Derailleur Cage Assembly Kit
  • Full replacement cage assembly
  • Outer and inner cages, damper, and pulleys
£135.00
SALE
CeramicSpeed OSPW Aero Alpha For Shimano 9250/8250
CeramicSpeed
OSPW Aero Alpha for Shimano 9250/8250
£539.99
RRP £609.99 Save 11%
SALE
SRAM Red AXS XPLR E1 Rear Derailleur Outer Link Kit
SRAM
Red AXS XPLR E1 Rear Derailleur Outer Link Kit
£14.39
RRP £21.00 Save 31%
SALE
SRAM Red AXS XPLR E1 Rear Derailleur Carbon Inner Cage
SRAM
Red AXS XPLR E1 Rear Derailleur Carbon Inner Cage
£41.59
RRP £62.00 Save 33%
SALE
Kogel Oversized Full Ceramic Pulley Set
Kogel
Oversized Full Ceramic Pulley Set
£227.19
RRP £320.00 Save 29%
SALE
Kogel Pulley Set
Kogel
Pulley Set
£156.19
RRP £220.00 Save 29%
Shimano 105 FD-R7100 12-Speed Braze-on Front Derailleur
Shimano
105 FD-R7100 12-Speed Braze-on Front Derailleur
£29.19
RRP £42.00 Save 31%
Shimano 105 FD-R7100 12-Speed 34.9mm Front Derailleur
Shimano
105 FD-R7100 12-Speed 34.9mm Front Derailleur
£38.94
RRP £45.00 Save 13%
Shimano GRX RD-RX820 12-Speed Rear Derailleur Max 51T
Shimano
GRX RD-RX820 12-Speed Rear Derailleur Max 51T
£93.59
RRP £120.00 Save 22%
Shimano GRX RD-RX820 12-Speed Rear Derailleur Max 45T
Shimano
GRX RD-RX820 12-Speed Rear Derailleur Max 45T
£88.09
RRP £120.00 Save 27%
Shimano GRX RD-RX820 12-Speed Rear Derailleur Max 36T
Shimano
GRX RD-RX820 12-Speed Rear Derailleur Max 36T
£89.99
RRP £120.00 Save 25%
SALE
Campagnolo Super Record EPS Wireless Front Derailleur
Campagnolo
Super Record EPS Wireless Front Derailleur
£255.00
RRP £715.00 Save 64%
Campagnolo Super Record EPS 12 Speed Wireless Rear Derailleur
Campagnolo
Super Record EPS 12 Speed Wireless Rear Derailleur
£542.00
RRP £840.00 Save 35%

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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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