WR Engine in YZ Frame?

Looking to put an '03 WR engine into an '03 YZ frame. It this a direct bolt-in? Any mods necessary? Thanks

Is that a yes? I told somebody it would and they questioned me. Now, of course, I have to find out for sure. I know a few small things on the frames are different but I'm only 99% sure the motors will swap. Please provide the extra 1%. Thanks

I dont know, but you can try it.

yzf an wrf are same motor just some internal diffrences an a starter :ride:

hey 2weelz,

I may have misread your post. Are you asking WR to YZF or to YZ (2stroke)?

WR to YZF shouldn't be a problem

The motor drops right in.

I just did this (with a '04 WR motor into a '03 YZ frame). Like you mentioned earlier, there are only a few small peripheral items such as the CDI mount, voltage reg., ignition guard mount, and left side wire harness guide that are different.

On my project I even went all out to try wiring a YZ CDI to the WR stator but was unsuccessful. To late now, bracket is welded on and frame is at the powder coater!

Good luck.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now