1999 yz 400, what engine will fit?

1 reply to this topic
  • alewis

Posted March 17, 2007 - 12:09 PM


i have a 1999 yz400 and the motor was blown when i got it, cases cracked and the whole works. i want to put a different motor in it but don't know what will fit. any help would be very appreciated, thanks

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  • Kyle Prior

Posted March 17, 2007 - 12:24 PM


You can put another 400 in it. A 426 motor might fit too, maybe even a 450 motor with some frame mods....

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