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  1. #1
    Dude. Natron's Avatar
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    Simple Sugino 75 question

    Ok this is stupid. I keep seeing reference to the hex bolts common to Sugino 75 BB/crank setups being 15mm. Do they seriously use a huge 15mm hex wrench for those bolts or am I reading this wrong? Anyone who has them on their bikes want to chime in and let me know? I only ask because I haven't even seen a 15mm hex wrench around here and photos of the BB/crank setups I've seen don't look like the head is that big.

    The biggest I've seen are 10mm hex bolts holding the crank arms on my Shimano XT setup..

  2. #2
    Cornucopia of Awesomeness baxtefer's Avatar
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    crank bolt is standard 8mm. chainring bolts are standard 5mm.
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  3. #3
    Dude. Natron's Avatar
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    Quote Originally Posted by baxtefer
    crank bolt is standard 8mm. chainring bolts are standard 5mm.
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  4. #4
    Senior Member d_nast's Avatar
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    the 15mm size is not hex, they are the size of crank bolts with heads for socket wrenches.

  5. #5
    park ranger
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    usually when it says hex and then 15mm it means it's a regular six point 15mm bolt head...six point being the hex shape...i have some crank bolts on my bike that are 14mm hex.
    not 14mm allen, that would be effing huge.
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  6. #6
    park ranger
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    external vs. internal hex, that's easier.
    Quote Originally Posted by Malibu Police Chief
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