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Thread: crf 100 big bore?

  1. #1
    Join Date
    Jun 2009
    Posts
    48

    Default crf 100 big bore?

    Is there a bolt on big bore out there that will keep me in a class that the limit is 110? i have found several but they all require cylinder boring which i want to AVOID.

  2. #2
    Join Date
    Oct 2008
    Location
    Warrenton, VA
    Posts
    205

    Default

    BBR sells a ready to bolt on kit that includes the cylinder and a new cam, but it's 120cc.
    2002 Honda RC51
    2004 KTM 105SMR

  3. #3
    Join Date
    Jul 2005
    Posts
    64

    Default

    Daytona 48.8 stroke Crank takes you to 108cc.
    I've never tried it with a stock cylinder - might need an extra base gasket or two. Can PM me if you want the details.

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