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1985 2001 2005 2006 250 250 clutch 250ex 250x 300ex 400 400 ex 400 ex trans problems 400ex 400ex help 450r adjustment atv axle big bore kit bogging brakes cam carb carb jetting carb problems carb rebuild carburetor cdi chain clutch compression electrical electrical problem engine engine rebuild engine wont start exahust exhaust fenders fuel fuel pump fuse help honda honda 250 honda trx hot cams idle jet jets jetting key lights live mods motor neutral light new guy new rings newbie nfl no spark noise performance piston plastics problems quad rancher rancher350 rebuild recon repair shifting problems stage 2 hotcams starter stream swingarm timing tires top end top end rebuild transmission trx trx125 trx200 trx250 trx250ex trx250r trx300ex trx400 trx400ex trx450r tuning valve valves video wire harness wiring wont start
  1. Dyno/Tuning Room
    Hey guys I'm new to the forums and could use some help with jetting my 02 400ex. I live in PA altitude around 1000ft. I have a unit air filter with no air box lid and a full white bros exhaust. I have no idea what to make my main jet size so any suggestions?????
    carburetor engine tuneing jetting
  2. Engine/EFI/Drivetrain
    I just wanted to see what is some good kits I been looking at the trinity kits but i don't know if that's the best I can get
    big bore kit engine tuneing
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