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  1. Engine/EFI/Drivetrain
    How’s it going everyone, I’m tearing apart the top end on my 2001 400EX and it’s never been touched before so naturally I had a bolt break on me. It’s one of the 6x32 small bolts on the right side of the cylinder where the cam chain is. Tried drilling it out and using an easy out but all it did...
  2. Engine/EFI/Drivetrain
    Does anyone know if the '05 and newer 400ex engines (with reverse) fit into a '04 and older ex frame without to many modifications Thanks Jesse
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