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About billyjames

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  1. billyjames

    CRF450X What is the best pipe?

    I have modified the tail pipe, taken off the smog, re-jetted... I am thinking about a FMF Q for better performance and sound - I hate the sewing machine effect that I have now. What is a good tail pipe?
  2. billyjames

    CRF450x valves, any truble

    Can someone help me??? My CRF450X sounds likes its having major valve problems. I had (1) adjustment then went riding, within 2 hours its making some rattling sounds that just arent right-especially after spending $7200.00