09 450 cylinder head fitment

2 replies to this topic
  • Reke208

Posted March 12, 2015 - 12:50 PM


Hello All,


I recently had the 2009 yz450f I just purchase (damn CL) topend grenade on me and I am curious as to what other year bikes/atv cylinder heads will fit.


2007-09 yz450, I assume the same is for the WR. How about the yzf quad? Trying to find a serviceable replacement that won't break the bank.



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  • grayracer513

Posted March 12, 2015 - 01:19 PM


Well, not exactly.  The carb model quad heads and the '07-'10 WR heads have provisions for air injection that have to be blocked off, and a couple of other details.  Best off staying with an '06--'09 YZ450F head. 


You should also contact Fast Heads or Engine Dynamics about reconstructing yours, no matter what it looks like.  You may be pleasantly surprised by what they can do.

  • Reke208

Posted March 16, 2015 - 10:31 AM


thanks for the heads up!

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