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  1. #1
    mtbr member
    Join Date
    Apr 2012

    Bottom Bracket for Gunnar Ruffian Single Speed.

    I'm building out a Gunnar Ruffian single speed and not sure about the length of a spindle. I've got an FSA ISIS BB that is 107mm and the cranks touch the frame. Not sure if 113mm is wide enough or if I should go with 118mm. Any suggestions?

    Another question...I've found BB listed for both road and mountain bikes. Does it really matter just as long as you have the diameter correct? I assume a mountain bike might be more durable?
    Last edited by lostskier; 03-21-2013 at 06:31 PM.

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