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jetting

  1. YFZ450 & YFZ450R General Talk
    hey all, i recently bought a YFZ468 thats running terrible, valves are in spec. Im at sea level and around 50°F. just wondering what you guys are running for jetting.. no airbox lid, k&n filter, hmf slipon
  2. YFZ Powertrain
    08 YFZ 450, I am adding a Hot Rods +3 Stroker Kit. Rest of the quad is GYTR stock. The question is: once I add this Stroker Kit, does anyone have any ideas on the size of jets I will need, or should try? I would say this quad has never been opened up, and stock jets are in place. Air Lid...
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