HEADS UP!!!

Site upgrade in progress... Core site functions are working, but some non-critical features/functions will be temporarily unavailable while we work to restore them over the next couple of weeks.

Please post any bugs you encounter, but before you do, check to see if it's already listed.

Thanks for your patience while we work to improve the community.

Sign in to follow this  
Followers 0
h20mn

Gear box

4 posts in this topic

Has anybody swaped out a 06 wr gear box into a 07 yz ? If so did you have to change out the cams or leave everything stock.

Share this post


Link to post
Share on other sites

That won't work. The '06 WR is an Gen1 450, while the '07 YZF as a Gen2. The trans in the later models is about 12mm wider overall.

However, the wide ratio trans from an '07 or later WR450 WILL fit, and can be installed using the YZF cam, forks and output shaft.

http://www.thumpertalk.com/forum/showthread.php?t=464212

Factoid: If you use the first 3 gears from a YZF, and the 4th and 5th from the WR, you end up with a first 4 gears just like the '03 '05 4 speed, plus the 5th gear on top.

Share this post


Link to post
Share on other sites
That won't work. The '06 WR is an Gen1 450, while the '07 YZF as a Gen2. The trans in the later models is about 12mm wider overall.

However, the wide ratio trans from an '07 or later WR450 WILL fit, and can be installed using the YZF cam, forks and output shaft.

http://www.thumpertalk.com/forum/showthread.php?t=464212

Factoid: If you use the first 3 gears from a YZF, and the 4th and 5th from the WR, you end up with a first 4 gears just like the '03 '05 4 speed, plus the 5th gear on top.

You mentioned this before, what is 4th gear like on the 03? Just inbetween 4/5 on the later models?

I think I want to try this to get a taller 4/5 for the fire roads I frequent... Either that or just a 5th.

Share this post


Link to post
Share on other sites

Here they are:

'06-'11

YZ450...03YZF....'07WR....Hybrid*

1.929....1.929....2.416.....1.929

1.533....1.563....1.733.....1.533

1.278....1.278....1.312.....1.278

1.091....1.050....1.050.....1.050

0.952................0.840.....0.840

*'06-'11 YZ450 1,2,3 w/'07+ WR450 4-5

Share this post


Link to post
Share on other sites

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
Sign in to follow this  
Followers 0