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Bike Derailleurs

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40 Products
  1. 8 to 9 Speed Rear Derailleur
    €19.50
    DECATHLON

    8 to 9 Speed Rear Derailleur
  2. Triple Chainwheel Front Derailleur
    €12.00
    DECATHLON

    Triple Chainwheel Front Derailleur
  3. Front derailleur - SHIMANO 105 - FD-R7000-F
    €42.00
    VAN RYSEL

    Front derailleur - SHIMANO 105 - FD-R7000-F
  4. 7/8-Speed Rear Derailleur Acera M3020
    €24.00
    SHIMANO

    7/8-Speed Rear Derailleur Acera M3020
  5. Pair of Jockey Wheels 9-/10-Speed
    €16.50
    SHIMANO

    Pair of Jockey Wheels 9-/10-Speed
  6. 10-Speed Medium Cage Rear Derailleur Deore M6000 Shadow R+
    €60.00
    SHIMANO

    10-Speed Medium Cage Rear Derailleur Deore M6000 Shadow R+
  7. Rear Derailleur Sora ARDR3000SS 9-Speed
    €32.00
    BTWIN

    Rear Derailleur Sora ARDR3000SS 9-Speed
  8. Rear Derailleur 6/7-Speed Shimano Tourney RD-FT35-A-SS
    €13.00
    BTWIN

    Rear Derailleur 6/7-Speed Shimano Tourney RD-FT35-A-SS
  9. Front Derailleur Double Chainset Shimano 105
    €34.00
    VAN RYSEL

    Front Derailleur Double Chainset Shimano 105
  10. 9-Speed Rear Derailleur Altus RD-M2000
    €36.00
    SHIMANO

    9-Speed Rear Derailleur Altus RD-M2000
  11. Microshift 2S Front Derailleur
    €21.00
    VAN RYSEL

    Microshift 2S Front Derailleur
  12. 1x11-Speed Long Cage Rear Derailleur Deore M5100
    €65.00
    SHIMANO

    1x11-Speed Long Cage Rear Derailleur Deore M5100
  13. Rear Derailleur Microshift
    €27.00
    VAN RYSEL

    Rear Derailleur Microshift
  14. Pair of Jockey Wheels for Deore 10/11-Speed Derailleurs
    €13.00
    SHIMANO

    Pair of Jockey Wheels for Deore 10/11-Speed Derailleurs
  15. 10-Speed Long Cage Rear Derailleur Deore M5130
    €48.00
    SHIMANO

    10-Speed Long Cage Rear Derailleur Deore M5130
  16. 10-Speed Rear Derailleur AdventX
    €55.00
    MICROSHIFT

    10-Speed Rear Derailleur AdventX
  17. Rear Derailleur Microshift
    €50.00
    VAN RYSEL

    Rear Derailleur Microshift
  18. Rear Derailleur 11-Speeds Microshift M665M
    €48.00
    MICROSHIFT

    Rear Derailleur 11-Speeds Microshift M665M
  19. 2x9-Speed 31.8/34.9 mm Top / Bottom Pull Top Swing Front Derailleur
    €21.00
    MICROSHIFT

    2x9-Speed 31.8/34.9 mm Top / Bottom Pull Top Swing Front Derailleur
  20. SHIMANO 105 RD-R7000-GS rear derailleur
    €55.00
    VAN RYSEL

    SHIMANO 105 RD-R7000-GS rear derailleur

  21. SRAM GX 10-speed rear derailleur Type 2.1
    €70.00
    SRAM

    SRAM GX 10-speed rear derailleur Type 2.1

  22. Front Derailleur 2x9 Shimano Sora R3000
    €27.00
    VAN RYSEL

    Front Derailleur 2x9 Shimano Sora R3000

  23. 3 to 6 Speed Rear Derailleur
    €13.00
    DECATHLON

    3 to 6 Speed Rear Derailleur
  24. Rear Derailleur Microshift 8/9 Speed RD-M46S
    €32.00
    ELOPS

    Rear Derailleur Microshift 8/9 Speed RD-M46S
  25. Rear Derailleur Microshift Advent 1X9 Speed Medium Screed
    €55.00
    MICROSHIFT

    Rear Derailleur Microshift Advent 1X9 Speed Medium Screed
  26. Pair of Jockey Wheels for XT 11-Speed Derailleur
    €11.00
    SHIMANO

    Pair of Jockey Wheels for XT 11-Speed Derailleur
  27. 1x8-Speed Medium Cage Rear Derailleur M5185
    €27.00
    MICROSHIFT

    1x8-Speed Medium Cage Rear Derailleur M5185
  28. 1x12-Speed Rear Derailleur GX Eagle Lunar
    €135.00
    SRAM

    1x12-Speed Rear Derailleur GX Eagle Lunar
  29. 1 x 12-Speed Rear Derailleur SX Eagle
    €70.00
    SRAM

    1 x 12-Speed Rear Derailleur SX Eagle
  30. Rear Derailleur RD-M46-L 8/9 Speed
    €21.00
    ELOPS

    Rear Derailleur RD-M46-L 8/9 Speed
  31. Derailleur Rear 1x6/7-Speed Shimano Tourney
    €24.00
    SHIMANO

    Derailleur Rear 1x6/7-Speed Shimano Tourney
  32. 10-11-Speed Long Cage Rear Derailleur Deore M5120
    €46.00
    SHIMANO

    10-11-Speed Long Cage Rear Derailleur Deore M5120
  33. Rear Derailleur 8-Speed Altus RD-M310-L - Black
    €21.00
    ELOPS

    Rear Derailleur 8-Speed Altus RD-M310-L - Black
  34. 6-Speed Derailleur Tourney
    €18.00
    ELOPS

    6-Speed Derailleur Tourney
  35. Derailleur Rear 10-Speed Long Cage Deore M6000
    €60.00
    SHIMANO

    Derailleur Rear 10-Speed Long Cage Deore M6000
  36. B'twin 10 and 11-Speed Rear Derailleur
    €36.00
    RIVERSIDE

    B'twin 10 and 11-Speed Rear Derailleur
  37. 3x9S 34.9 mm Top/Bottom Pull Down Swing Front Derailleur FD-M50
    €13.00
    MICROSHIFT

    3x9S 34.9 mm Top/Bottom Pull Down Swing Front Derailleur FD-M50
  38. 9-Speed Rear Derailleur Altus
    €27.00
    SHIMANO

    9-Speed Rear Derailleur Altus
  39. Rear Derailleur Tiagra
    €36.00
    VAN RYSEL

    Rear Derailleur Tiagra
  40. Rear Derailleur 11-Speed SRAM NX
    €95.00
    SRAM

    Rear Derailleur 11-Speed SRAM NX
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Bike Derailleurs at Decathlon Ireland

The bike derailleur is a crucial component that plays an integral role in the smooth functioning of a bicycle's drivetrain system. It serves as the mechanism responsible for shifting gears, allowing cyclists to effortlessly transition between various gear ratios to adapt to changing terrain and riding conditions. Comprised of both front derailleurs and rear derailleurs, this intricate system ensures optimal efficiency and performance, making it an essential part for any avid cyclist.

The hanger bike, also known as the derailleur hanger or dropout, is a small but crucial part of the bike derailleur system. Made from durable materials such as aluminum or steel, it serves as a connection point between the derailleur and the bicycle frame. Its purpose is to provide a secure and stable attachment for the derailleur, ensuring proper alignment and smooth operation during gear shifts.

Explore our selection of bike derailleurs today!