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About yamfan

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  1. yamfan

    YFZ 450 problems have you had

    Any updates to improve the oiling on the YZF? I too have suffered a rod bearing problem. Lower one went out and needs to be replace along with the crank.
  2. yamfan

    new to yz426

    I have '01 426 with a Dr.D pipe and a K&N air filter, I installed a Dyno jet kit in it but it doesn't run that well on top. I used their needle in the 3rd clip position with their 180 main jet. Runs real well down low but boggs up in the high rpm area.