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je hc piston

  1. Tech/Setups for Supermoto
    SmJunkies, I just got my Mikuni TM40 From procycle.us for my DR650 but there is a problem. The carb came prejetted for airbox, after market air filter, and exhaust. I have those mods plus one more. So it isn't jetted properly because i have a JE High Compression piston 10.1:5 I want to rejet...
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