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  1. #1
    Super Clyde
    Reputation: askibum02's Avatar
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    Jul 2005
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    538

    Different size 20" bikes?

    I was noticing that my daughter, who is shorter than her older brother looked like she has outgrown her 20" Hotrock. My son, by comparison, who is a good 6 inches taller looks comfortable on his 20" Walmart special with his seat pretty much all the way up. Do Specialized Hotrocks run small or is it because she has a girls model?

    Notice the overall hight difference.
    Different size 20" bikes?-imageuploadedbytapatalk1380240864.867668.jpg

    The stem height difference.
    Different size 20" bikes?-imageuploadedbytapatalk1380240897.333492.jpg

    Even the wheel base is shorter on the Hotrock.
    Different size 20" bikes?-imageuploadedbytapatalk1380240959.166699.jpg




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  2. #2
    mtbr member
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    Jul 2012
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    29

    Re: Different size 20" bikes?

    20" is the wheel size; the frame size depends on the bike and different manufacturers choose different sizes. Islabike, for example, has two 20" frames for some models (small and large).

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