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  1. New Member Intros
    Hi guys, I have some issues with a 2004 yfz450 i changed out to jets to 175 48 because it ran rough, hot, and cut out, sputtered, above 3/4 throttle and lost power intermittently like hitting a rev limiter, my understanding was it was running lean so i got the jets, and had my clip on 3rd grove...
  2. YFZ Powertrain
    I live in north texas and I just put a k&n air filter on my 04 yfz 450 and I can tell it needs to be jetted. It does have a pipe and some other stuff but I was just wondering what jet I should use so I don't have to spend 8 hours trying to jet it.
  3. 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
  4. 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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