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Bike Derailleurs

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40 Products
  1. Triple Chainwheel Front Derailleur
    €12.00
    DECATHLON

    Triple Chainwheel Front Derailleur
  2. 8 to 9 Speed Rear Derailleur
    €19.50
    DECATHLON

    8 to 9 Speed Rear 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. 9-Speed Rear Derailleur Altus RD-M2000
    €36.00
    SHIMANO

    9-Speed Rear Derailleur Altus RD-M2000
  7. 10-Speed Medium Cage Rear Derailleur Deore M6000 Shadow R+
    €60.00
    SHIMANO

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

    Rear Derailleur Sora ARDR3000SS 9-Speed
  9. Rear Derailleur Microshift
    €27.00
    VAN RYSEL

    Rear Derailleur Microshift
  10. SRAM GX 10-speed rear derailleur Type 2.1
    €70.00
    SRAM

    SRAM GX 10-speed rear derailleur Type 2.1

  11. Front Derailleur Double Chainset Shimano 105
    €34.00
    VAN RYSEL

    Front Derailleur Double Chainset Shimano 105
  12. 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
  13. 10-Speed Rear Derailleur AdventX
    €55.00
    MICROSHIFT

    10-Speed Rear Derailleur AdventX
  14. 1x11-Speed Long Cage Rear Derailleur Deore M5100
    €65.00
    SHIMANO

    1x11-Speed Long Cage Rear Derailleur Deore M5100
  15. Rear Derailleur Microshift
    €50.00
    VAN RYSEL

    Rear Derailleur Microshift
  16. 3 to 6 Speed Rear Derailleur
    €13.00
    DECATHLON

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

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

    Rear Derailleur Microshift Advent 1X9 Speed Medium Screed
  19. Pair of Jockey Wheels for Deore 10/11-Speed Derailleurs
    €13.00
    SHIMANO

    Pair of Jockey Wheels for Deore 10/11-Speed Derailleurs
  20. 10-Speed Long Cage Rear Derailleur Deore M5130
    €48.00
    SHIMANO

    10-Speed Long Cage Rear Derailleur Deore M5130
  21. Rear Derailleur 11-Speeds Microshift M665M
    €48.00
    MICROSHIFT

    Rear Derailleur 11-Speeds Microshift M665M
  22. Microshift 2S Front Derailleur
    €21.00
    VAN RYSEL

    Microshift 2S Front Derailleur
  23. SHIMANO 105 RD-R7000-GS rear derailleur
    €55.00
    VAN RYSEL

    SHIMANO 105 RD-R7000-GS rear derailleur

  24. Pair of Jockey Wheels for XT 11-Speed Derailleur
    €11.00
    SHIMANO

    Pair of Jockey Wheels for XT 11-Speed Derailleur
  25. 1x8-Speed Medium Cage Rear Derailleur M5185
    €27.00
    MICROSHIFT

    1x8-Speed Medium Cage Rear Derailleur M5185
  26. 1x12-Speed Rear Derailleur GX Eagle Lunar
    €135.00
    SRAM

    1x12-Speed Rear Derailleur GX Eagle Lunar
  27. 1 x 12-Speed Rear Derailleur SX Eagle
    €70.00
    SRAM

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

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

    Derailleur Rear 1x6/7-Speed Shimano Tourney
  30. 10-11-Speed Long Cage Rear Derailleur Deore M5120
    €46.00
    SHIMANO

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

    Rear Derailleur 8-Speed Altus RD-M310-L - Black
  32. 6-Speed Derailleur Tourney
    €18.00
    ELOPS

    6-Speed Derailleur Tourney
  33. 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
  34. Derailleur Rear 10-Speed Long Cage Deore M6000
    €60.00
    SHIMANO

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

    B'twin 10 and 11-Speed Rear Derailleur
  36. 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
  37. 9-Speed Rear Derailleur Altus
    €27.00
    SHIMANO

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

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

    Rear Derailleur 11-Speed SRAM NX
  40. Front Derailleur 2x9 Shimano Sora R3000
    €27.00
    VAN RYSEL

    Front Derailleur 2x9 Shimano Sora R3000

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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!