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  1. YFZ450 & YFZ450R General Talk
    To start off I have a 06 Carb with a Miller ATV Ported head, 96mm 12.4:1 Wiesco Piston, barker exh, FCI and cam mod. My last dyno I had was with that new setup at it dyno at 47hp. Which I remember others saying this dyno runs about 3hp low but I feel thats not that true as I run the same as a...
    big bore piston rebuild
  2. Maintenance
    I'm looking to buy a complete bottom end kit with a +4.4 stroker crank and a high compression piston for my 04 yfz. I'm new to the YFZ world and don't know if there are any additional mods I need to do besides the oil upgrade to protect my motor. If anyone could help it would be appreciated!
    bottom end crank piston
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