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  1. YFZ not running

    YFZ450 & YFZ450R General talk
    I’m new to the racing quad community but I have a question. Okay I’m gonna start off with I bought a 2004 (carb) YFZ450 back in April. Well I had it two days and the motor locked up. A rod went through the case and broke a whole lotta stuff. Later I ordered a 500cc big bore kit from BP racing...