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#beadlock #suspension #yfz450 2008 2008yfz450 2017 yamaha yfz 450r 450 450r a arms aftermarket airbox ais delete backfiring bars battery best coilovers big 3 big bore carb clutch coolant crank cranks wont fire up dasa ecu efi efi tunning electric issue electrical engine exhaust factory 43 fast learner fci fci yfz450r fmf fourwerx front fuel controller fuel injected fuel programmer full exhaust general graphics gytr help help please high compression hmf hmf exhaust houser intake jetting jls leak long travel suspension maintainance mapping msd need help nerf bars new owner no spark no start oem oil parts parts review quad racing atv rally suspension rebuild rekluse clutch rossier sand dunes shocks sprocket stalling throttle tps adjustment transmission trinity tune tune yfz450r tuning vortex wheel wiring wont start xfr yfz yfz 450 2004 yfz 450 2005 yfz 450r yfz 50 yfz450 yfz450 help yfz450 problems yfz450r yfz450r se
  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...
    air fuel mix jetting lean popping rich
  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.
    air flter jetting k&n
  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
    help jetting yfz450 yfz468
  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...
    jetting
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