Cycling Equipment · Public discussion

Compact Cranks: Bontrager Race-x-lite vs FSA SL-K MegaExo

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Cycling Equipment
Published
28 March 2005
Last activity
29 March 2005
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  1. I'm ordering a new bike and I have my choice between these two compact
    cranks; Bontrager Race-X-Lite or FSA SL-K MegaExo.

    I would like to know if anyone has any thoughts, opinions, pro's, cons,
    around stiffness, bearing reliability, shifting between rings, etc.
    The FSA's are slightly more expensive, but that is not an issue. Also,
    I believe the FSA's may be slightly lighter as well.

    Thanks

  2. Quoted message said:

    I'm ordering a new bike and I have my choice between these two compact
    cranks; Bontrager Race-X-Lite or FSA SL-K MegaExo.

    I would like to know if anyone has any thoughts, opinions, pro's, cons,
    around stiffness, bearing reliability, shifting between rings, etc.
    The FSA's are slightly more expensive, but that is not an issue. Also,
    I believe the FSA's may be slightly lighter as well.

    Thanks

    I'll bet they are made in the same place in Taiwan. We have installed
    more than a few FSA one's including the new aluminum Gossamer
    model..like them a lot.

  3. Quoted message said:

    I'm ordering a new bike and I have my choice between these two compact
    cranks; Bontrager Race-X-Lite or FSA SL-K MegaExo.

    I would like to know if anyone has any thoughts, opinions, pro's,
    cons, around stiffness, bearing reliability, shifting between rings,
    etc. The FSA's are slightly more expensive, but that is not an issue.
    Also, I believe the FSA's may be slightly lighter as well.

    Compact crank /bearing/ reliability?

  4. Most Bontrager compact cranks that I have seen are 50-36. Not
    necessarily bad, but different from the 'standard' compact gearing of
    50-34. Also, the MegaExos use the outboard bearing design (similar to
    DA), while I believe that the Bontragers use ISIS (could be wrong). If
    you believe the hype, this has a few advantages. Outboard bearings are
    supposed to offer increased BB longevity due to the ability to run
    larger (standard) sized bearings while the tight confines of a 22mm
    ISIS spindle in a standard BB shell require smaller, custom, less
    durable bearings. Finally, if you fancy yourself a Petacchi type (or a
    clydesdale), you'll be comforted to know that the oversized BB found in
    the MegaExo BB coupled with the wider bearing stance supposedly serves
    to lessen overall BB flex.

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