Bike Derailleurs

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40 Products
  1. Rear Derailleur 8-Speed Altus RD-M310-L - Black
    €21.00
    ELOPS

    Rear Derailleur 8-Speed Altus RD-M310-L - Black
  2. 8 to 9 Speed Rear Derailleur
    €19.50
    DECATHLON

    8 to 9 Speed Rear Derailleur
  3. 7/8-Speed Rear Derailleur Acera M3020
    €24.00
    SHIMANO

    7/8-Speed Rear Derailleur Acera M3020
  4. 3 to 6 Speed Rear Derailleur
    €13.00
    DECATHLON

    3 to 6 Speed Rear Derailleur
  5. Pair of Jockey Wheels 9-/10-Speed
    €16.50
    SHIMANO

    Pair of Jockey Wheels 9-/10-Speed
  6. Triple Chainwheel Front Derailleur
    €12.00
    DECATHLON

    Triple Chainwheel Front Derailleur
  7. 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
  8. 1x8-Speed Medium Cage Rear Derailleur M5185
    €27.00
    MICROSHIFT

    1x8-Speed Medium Cage Rear Derailleur M5185
  9. Rear Derailleur Microshift 8/9 Speed RD-M46S
    €32.00
    ELOPS

    Rear Derailleur Microshift 8/9 Speed RD-M46S
  10. 1x12-Speed Rear Derailleur GX Eagle Lunar
    €135.00
    SRAM

    1x12-Speed Rear Derailleur GX Eagle Lunar
  11. Derailleur Rear 1x6/7-Speed Shimano Tourney
    €24.00
    SHIMANO

    Derailleur Rear 1x6/7-Speed Shimano Tourney
  12. Rear Derailleur Microshift
    €50.00
    VAN RYSEL

    Rear Derailleur Microshift
  13. 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
  14. Rear Derailleur Microshift
    €27.00
    VAN RYSEL

    Rear Derailleur Microshift
  15. Microshift 2S Front Derailleur
    €21.00
    VAN RYSEL

    Microshift 2S Front Derailleur
  16. Front Derailleur Double Chainset Shimano 105
    €34.00
    VAN RYSEL

    Front Derailleur Double Chainset Shimano 105
  17. 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
  18. Rear Derailleur Tiagra
    €36.00
    VAN RYSEL

    Rear Derailleur Tiagra
  19. 1 x 12-Speed Rear Derailleur SX Eagle
    €70.00
    SRAM

    1 x 12-Speed Rear Derailleur SX Eagle
  20. SHIMANO 105 RD-R7000-GS rear derailleur
    €55.00
    VAN RYSEL

    SHIMANO 105 RD-R7000-GS rear derailleur

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

    Front Derailleur 2x9 Shimano Sora R3000

  22. Rear Derailleur Sora ARDR3000SS 9-Speed
    €32.00
    BTWIN

    Rear Derailleur Sora ARDR3000SS 9-Speed
  23. 9-Speed Rear Derailleur Altus RD-M2000
    €36.00
    SHIMANO

    9-Speed Rear Derailleur Altus RD-M2000
  24. Pair of Jockey Wheels for XT 11-Speed Derailleur
    €11.00
    SHIMANO

    Pair of Jockey Wheels for XT 11-Speed Derailleur
  25. 10-Speed Long Cage Rear Derailleur Deore M5130
    €48.00
    SHIMANO

    10-Speed Long Cage Rear Derailleur Deore M5130
  26. 10-Speed Rear Derailleur AdventX
    €55.00
    MICROSHIFT

    10-Speed Rear Derailleur AdventX
  27. Rear Derailleur RD-M46-L 8/9 Speed
    €21.00
    ELOPS

    Rear Derailleur RD-M46-L 8/9 Speed
  28. 1x11-Speed Long Cage Rear Derailleur Deore M5100
    €65.00
    SHIMANO

    1x11-Speed Long Cage Rear Derailleur Deore M5100
  29. 10-11-Speed Long Cage Rear Derailleur Deore M5120
    €46.00
    SHIMANO

    10-11-Speed Long Cage Rear Derailleur Deore M5120
  30. 6-Speed Derailleur Tourney
    €18.00
    ELOPS

    6-Speed Derailleur Tourney
  31. Rear Derailleur Microshift Advent 1X9 Speed Medium Screed
    €55.00
    MICROSHIFT

    Rear Derailleur Microshift Advent 1X9 Speed Medium Screed
  32. Rear Derailleur 11-Speeds Microshift M665M
    €48.00
    MICROSHIFT

    Rear Derailleur 11-Speeds Microshift M665M
  33. 10-Speed Medium Cage Rear Derailleur Deore M6000 Shadow R+
    €60.00
    SHIMANO

    10-Speed Medium Cage Rear Derailleur Deore M6000 Shadow R+
  34. Front derailleur - SHIMANO 105 - FD-R7000-F
    €42.00
    VAN RYSEL

    Front derailleur - SHIMANO 105 - FD-R7000-F
  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. SRAM GX 10-speed rear derailleur Type 2.1
    €70.00
    SRAM

    SRAM GX 10-speed rear derailleur Type 2.1

  38. 9-Speed Rear Derailleur Altus
    €27.00
    SHIMANO

    9-Speed Rear Derailleur Altus
  39. Rear Derailleur 11-Speed SRAM NX
    €95.00
    SRAM

    Rear Derailleur 11-Speed SRAM NX
  40. 10-Speed Long Cage Rear Derailleur Cues RD U6000GS
    €60.00
    SHIMANO

    10-Speed Long Cage Rear Derailleur Cues RD U6000GS
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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!