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  1. 05 yfz 490 big bore stalling problem

    Yamaha YFZ450/450R (2004-Present)
    well i just bought this quad and the guy that i got it from had the big bore kit put in by a local shop here about a year ago, they built it and tuned it and the guy said they had one trip to the dunes with it and it ran perfect.. well the first thing i did is took it to the dunes and what was...
  2. little problem quick question

    Yamaha YFM660R Raptor (2001-2005)
    ok so there is a trillion lean and rich questions but i dont know how to word this to find out.. so please help. bought 01 raptor 660r completely factory. bike was running rich would smoke black when revving. installed pro design air filter adapter uni filter and a slip on exhaust for now. and i...
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