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 RD-RX820 12-Speed Rear Derailleur Max 36T
Shimano
GRX RD-RX820 12-Speed Rear Derailleur Max 36T
£86.49
RRP £120.00 Save 28%
SALE
SRAM Rival 1x XPLR Dub Wide E1 Chainset
SRAM
Rival 1x XPLR Dub Wide E1 Chainset
  • High-performance aluminium
  • DUB bottom bracket enhances durability and simplifies maintenance
  • SRAM X-SYNC wide-tooth, narrow-tooth chainring technology
From £98.59
RRP £130.00 Save 24%
Campagnolo Super Record 12-speed Braze-On Front Derailleur
Campagnolo
Super Record 12-speed Braze-On Front Derailleur
£150.00
RRP £168.00 Save 11%
Shimano M8000 XT 11-Speed Shadow+ SGS Rear Derailleur
Shimano
M8000 XT 11-Speed Shadow+ SGS Rear Derailleur
£89.99
RRP £100.00 Save 10%
SALE
CeramicSpeed Coated Campagnolo Oversized Pulley Wheel System
CeramicSpeed
Coated Campagnolo Oversized Pulley Wheel System
£321.00
RRP £515.00 Save 38%
SALE
CeramicSpeed 3D Printed Titanium Oversized Pulley Wheel System For SRAM 10/11 Speed
    CeramicSpeed
    3D Printed Titanium Oversized Pulley Wheel System for SRAM 10/11 Speed
    £1,049.00
    RRP £1,350.00 Save 22%
    SALE
    CeramicSpeed Oversized Pulley Wheel System For SRAM Red ETap
    CeramicSpeed
    Oversized Pulley Wheel System for SRAM Red eTap
    £323.00
    RRP £460.00 Save 30%
    Shimano Dura-Ace 9100 11-Speed Front Derailleur, Double 28.6/31.8 Mm
    Shimano
    Dura-Ace 9100 11-Speed Front Derailleur, Double 28.6/31.8 mm
    £113.00
    RRP £125.00 Save 10%
    SALE
    Campagnolo Campagnolo Record 11 Speed EPS Braze-On Front Derailleur
    Campagnolo
    Campagnolo Record 11 Speed EPS Braze-On Front Derailleur
    £269.00
    RRP £478.00 Save 44%
    CeramicSpeed OSPW RS Alpha Disc SRAM AXS Pulley Wheels Argent Special Edition
    CeramicSpeed
    OSPW RS Alpha Disc SRAM AXS Pulley Wheels Argent Special Edition
    £534.99
    CeramicSpeed OSPW RS Alpha Disc For Campy SR Wireless
    CeramicSpeed
    OSPW RS Alpha Disc for Campy SR Wireless
    £519.99
    Campagnolo Super Record X Wireless 13 Speed Rear Derailleur
    Campagnolo
    Super Record X Wireless 13 Speed Rear Derailleur
    £699.00
    Campagnolo Super Record Wireless 13 Speed Rear Derailleur
    Campagnolo
    Super Record Wireless 13 Speed Rear Derailleur
    £750.00
    Shimano GRX 717 Di2 Wireless Rear Derailleur
    Shimano
    GRX 717 Di2 Wireless Rear Derailleur
    £379.99
    CeramicSpeed OSPW Aero Alpha For SRAM Red/Force AXS Pulley Wheels
      CeramicSpeed
      OSPW Aero Alpha for SRAM Red/Force AXS Pulley Wheels
      £609.99
      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
      £441.89
      RRP £496.99 Save 11%
      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 £677.99 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

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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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