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  1. #1
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    Sizing on cyclocross bikes at bike shop vs online

    So I was in the burbs and stopped in a bike shop and checked out the surly cross check. Nice bike, I just don't have that kind of loot. So, I was looking at the Nashbar ss cyclocross and bikes direct motobecane fantom cross uno, both 400. Also saw the bikes direct motobecane turino disc brake bike. Anyways, I figured I'd get something as an all weather ride.

    Anyways, at the shop, the guy said with the flat bar, a 54 would work, but with a drop bar or bullhorn, since it would have me stretched out much more, I'd probably need a 52 (or i'm guessing a 53, but they don't make that size). Do you think the sizing difference would transfer to these other cross bikes as well? Also- I don't think it would make a difference, but I was wearing sandals with a very thin sole so my standover height might have been a quarter inch shorter than usual. What do you guys think? Is the geo and sizing similar? Should I go with the 52 since these have the drop bars as well?

  2. #2
    Senior Member grolby's Avatar
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    The Cross-Check sizing is unlike any other cyclocross bike I can think of. They run very long, to the point that I ride a 46 when my normal road bike size is 49-52 depending on reach. You really can't make a comparison between different bikes in any situation due to differences in geometry, but you would be particularly foolish to use the Cross-Check as a guide.

  3. #3
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    yeah, after looking at the sizing charts, the surly has a slightly lower standover height, but a slightly longer top tube than the bd fantom uno.

  4. #4
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    In general, a CX bike will have a higher bottom bracket than a road bike so you need to step down size to get the right fit.

    A country bike has a normal bottom bracket so that will be what you usually are riding in a typical road bike.

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