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  1. #1
    ɹǝʇsɯıʇ
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    switching Mavic freehub body

    Long question short: are the freehub bodies interchangeable on Mavic Ksyrium wheels?

    I have a Mavic Ksyrium wheel with a Shimano 9-speed cassette.

    I have another Mavic Ksyrium wheel, a slightly newer model, with Campagnolo 10-speed cassette. The rim is trashed and it has a couple broken spokes.

    I want to put the Campy freehub and cassette on the wheel that currently has the Shimano freehub. Is this possible? If so, are there instructions for taking the freehub off? I searched but I couldn't find anything helpful.

    I know my way around bikes fairly well but I have never disassembled a hub. I wanted to get my facts straight before I rip open these wheels.

  2. #2
    Senior Member
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    I don't know if those two freehubs can be swapped for sure but I think it would probably work. Here is Mavic's instructions.

    Tools needed:
    • 1 x 5 mm Allen wrench
    • 1 x 10 mm Allen wrench
    • Mavic®mineral oil M40122
    Disassemble the complete axle kit by following procedure 2.1.2. (2.1.3. for the Deemax®UST).
    Remove the FTS-L free wheel body :
    Pull the FTS-L free wheel body towards the exterior until it doesn’t move any farther (about 4 mm).
    Turn the FTS-L free wheel body and pull it carefully off the hub axle while holding the pawls and springs.
    Caution : When you disassemble the FTS-L free wheel body, the pawls are no longer supported. The pawls and springs may pop out. This can be prevented by
    holding the pawls with your hand.
    Remove the spring/pawl assembly and clean it.
    Replace the FTS-L free wheel body kit and lip seal (install the new one against the nose of the hub, the lip toward the outside). Lubricate the lip seal
    with Mavic®mineral oil M40122.
    Lubricate the inside of the FTS-L free wheel body kit in the cog area (10 - 20 drops of Mavic®mineral oil M40122).
    Mount the spring/pawl assembly (spring fits over the pins of the centering stud on the pawl assembly). Put the springs and then pawl assembly in
    place, the round side touching the axle. Then pivot the pawl assembly.
    Mount the FTS-L free wheel body kit :
    Make sure the spacer washer M40067 (available in 10 piece kit) is well placed inside the FTS-L free wheel body :
    The absence of this spacer washer prevents the free wheel from working properly.
    Mount the FTS-L free wheel body kit holding the pawl assembly in your hand in the low position (springs compressed) ;
    Mount the axle end screw and axle kit as indicated in procedures 2.1.2. (2.1.3. for the Deemax®UST). Mount the wheel on the frame, tighten the
    quick release skewer, and adjust the bearing free play.
    It is useful to lubricate the free wheel body 1 - 2 times a year or whenever it becomes noisy. For this, follow the above procedure.
    Attached Images Attached Images
    It's not rocket surgery.

  3. #3
    ɹǝʇsɯıʇ
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    Awesome. Thanks for that. I guess I'll just have to pull them apart tonight and see if it works.

  4. #4
    ɹǝʇsɯıʇ
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    Success! It was actually a lot easier than I thought.

    I just unbolted the axle using two allen wrenches and the freehub popped right off. Swapped the freehub and rebolted the axle and it's good to go.

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