first top end

3 replies to this topic
  • Kawirider37

Posted August 12, 2009 - 10:45 PM


I'm gonna replace the top end on my 08 yz450f. Can anyone recommend a kit that includes everything? Or maybe give me a detailed list of everything I'll need? I'm looking to stick with stock specs or close to it.

  • KJ790

Posted August 13, 2009 - 03:35 AM


Here's what I have been buying for my last couple rebuilds. OEM parts at a good price:

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  • Kawirider37

Posted August 13, 2009 - 11:53 PM


Thanks, That's what I was looking for. What else should I replace? Cam chain?

  • KJ790

Posted August 14, 2009 - 03:33 AM


Thanks, That's what I was looking for. What else should I replace? Cam chain?

Yes I would replace the cam chain, and it isn't a bad idea to get a new cam chain tensioner. Some people also like to replace the valve springs for piece of mind since they are cheap and the head will already be off, but this typically isn't necessary.

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