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About mark1257

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  1. mark1257

    09 pipe on 08 YZ250f

    The 2009 header was lenghtened 45 or 50mm which is what the fmf does by expanding the pipe. Fmf offers the same pipe for 06-09,so I think the 09 yz pipe would give the same performance.
  2. mark1257

    wr250F low end power: None?

    I Just Purchased A 2002 Wr250. Please Explain Your Mods And Where Can I Get A Zip Ty Fuel Screw And A Jd Jetting Kit(also What Do They Do?). Thanks!