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  1. #1
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    Helius FR chainline question

    When i had the Nicolai built up i just boshed it together with whatever spare bits were lying around.

    My Truvativ Howitzer BB has now died and needs replacing. Only question is with which one?
    http://www.chainreactioncycles.com/M...?ModelID=40487
    51mm or 56mm chainline?

    It's a Helius FR 2007 and I run a double chainring with e-13DRS and a 9spd cassette if thats helps?

    i had a look on the sheldon brown website and it's just confused me.

    cheers guys.

  2. #2
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    Check your inbox

  3. #3
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    cheers buddy.

    anyone?

  4. #4
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    The two sizes refer to the type of rear axle you are running. If it's the standard 135mm QR or 135mm Maxle then you need the 51mm BB. If you have the 150mm axle then you need the 56mm BB.

  5. #5
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    a simple answer to a simple question.

    cheers fella!

  6. #6
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    No worries, glad to be of help

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