2003 yz450f rolling chassis- what engines are compatable

6 replies to this topic
  • aj_clarke

Posted September 17, 2008 - 02:00 PM


Hi folks,
I have access to a 2003 450f rolling chassis (minus the engine) and was wondering if anyone has attempted to install a 06/07 engine into this frame.

For sure this is crazy but I can't seem to locate a 03-05 complete engine.

Thanks in advance,

  • grayracer513

Posted September 17, 2008 - 03:12 PM


I would imagine that it would be difficult to fit an '06+ engine. Even if the hard points lined up, there is the matter of the more vertical cylinder incline angle, which could cause some carb clearance issues with the frame, etc.

  • aj_clarke

Posted September 17, 2008 - 04:54 PM


Thanks Gray,
Tonight was my lucky night, located an 04' engine- should be a better fit with that extra gear!

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • grayracer513

Posted September 17, 2008 - 06:28 PM


What extra gear?

  • AnotherRedHead

Posted September 18, 2008 - 01:21 PM


isnt an 03 a 4 speed

  • yz426em

Posted September 18, 2008 - 01:24 PM


So is the 04 engine your looking at.:excuseme:

  • grayracer513

Posted September 18, 2008 - 01:25 PM


isnt an 03 a 4 speed

Yes, it is. And so is an '04 and an '05. So again I ask, what extra gear?

Related Content


Join Our Community!

Even if you don't want to post, registered members get access to tools that make finding & following the good stuff easier.

If you enjoyed reading about "" here in the ThumperTalk archive, you'll LOVE our community. Come join ThumperTalk today!

The views and opinions expressed on this page are strictly those of the author, and have not been reviewed or approved by ThumperTalk.