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Thread: 300ex jetting vs 250x jetting

  1. #1
    Join Date
    Dec 2003
    Location
    South Jersey
    Posts
    1,355

    300ex jetting vs 250x jetting

    will a 300ex jet kit work for a 250x?
    2002 400ex
    Burgard,PEP,AC,K&N,White Bros,Pro Taper,Duncan,Maier,Cycra,ITP,Radial,RPM,Galfer,Pro Design,Scott
    SOLD

    1988 250x
    Renthal,Acerbis,Tamers,Radials,Burgard,Douglas,+2a rms,Stream line,Uni,DMC,Duncan,Moose,Weisco, White Bros

  2. #2
    Join Date
    Aug 2002
    Location
    Staunton, Illinois
    Posts
    7,259
    i don't know that i would use the needle for a 300ex in a 250x. it may work, but i don't know the difference in diameter and taper between the two needles. also, i don't know how the jetting from stock is on either bike. you could try it, but i probally wouldn't try it unless you can get the kit really cheap or free. i would just go buy individual keihin jets.
    2005 450r

    *sold* 2001 400ex

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