450 Cyl Head on a 426 Cylinder?

1 reply to this topic
  • hazey123

Posted April 26, 2008 - 12:27 PM


Hey Gang,
I am looking for a replacement head for my 2002 wr426 and I found a 2006 yz 450 Cylinder Head. Will this yz450 Head fit on my wr426 cylinder and piston? What about the Cam compatibility between the two models. I know that the two bikes share the 95mm bore but thats about all I know about their compatibility.
Thanks for the help guys!:thumbsup:

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  • Birdy426

Posted April 26, 2008 - 01:04 PM


I ahven't tried it myself, but I have read that a 450 head will not work on a 400/426. A 400 head will work for you if you can't find a 426, but you have to block off a vacuum port on the intake side.


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