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Bottom Brackets

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  1. ROTOR T4724 Internal BB

    ROTOR T4724 Internal BB

    As low as €59.90
    More options
  2. Rotor T4724 External BB

    ROTOR T4724 External BB

    As low as €59.90
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  3. Rotor BB Track30 BSA Steel C04-030-01010

    ROTOR BB Track30 BSA Steel

    €94.90
  4. Rotor PF4624 BB MTB

    ROTOR PF4624 BB MTB

    As low as €59.90
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  5. Rotor PF4624 BB

    ROTOR PF4624 BB

    As low as €59.90
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  6. Rotor BB30 Bearing Set

    ROTOR BB30 Bearing Set

    As low as €21.90
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  7. ROTOR PF4624 BBRight BB Road

    ROTOR PF4624 BBRight BB Road

    €59.90
  8. Rotor PF4129 BB DUB Compatible C04-038-01010-0

    ROTOR PF4129 DUB® Compatible Steel

    €46.90
  9. Rotor BB4224 BB Road

    ROTOR BB4224 BB Road

    As low as €59.90
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  10. Rotor BSA30 BB

    ROTOR BSA30 BB

    As low as €59.90
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  11. Rotor BB1 BB MTB BSA Steel Black C04-006-01010-0

    ROTOR BB1 BB MTB BSA Steel Black

    €41.90
  12. ROTOR BB1 BB Road BSA

    ROTOR BB1 BB Road BSA

    As low as €41.90
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Are you interested in learning more about chainsets and bottom brackets?

Chainsets and bottom brackets play a crucial role in transferring the power generated by the cyclist to the bike's chain, which ultimately propels the rear wheel. A chainset consists of one or multiple chainrings that are attached to the cranks, where the pedals are mounted. These cranks, one for the right leg and one for the left, are positioned at 180 degrees from each other and connected by the bottom bracket.


Chainrings are a collection of gears responsible for driving the bike chain and transmitting motion to the rear wheel through the cassettes. Different sizes of chainrings are available to adjust the drivetrain force and adapt the gearing to varying terrain conditions.


The bottom bracket can be likened to the heart of the bicycle, despite being a component that is not often discussed or visible. Most bottom brackets are sealed and airtight, assembled under pressure with sealed bearings. They are not designed to be disassembled, but they can be lubricated to enhance performance.


Due to the limited maintenance and repair options, if a bottom bracket fails, it typically necessitates replacing the entire chainset rather than repairing it individually.

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