WR gearbox in YZ

[Shorty_925]

Has anyone tried to fit a WR450f gearbox into a YZ450f? Or anyone know if its possible to fit? Talking 07 models here. Havent been into the dealer to ask, thought Id try here first, cheers.

[barty5]

Has anyone tried to fit a WR450f gearbox into a YZ450f? Or anyone know if its possible to fit? Talking 07 models here. Havent been into the dealer to ask, thought Id try here first, cheers.

have a look on yamaha.com the have full list of part numbers and picks the 1st 2 numbers are the year and last two 00 are the country so dont worry bout them.
althought with out looking im guessing the wr has an xtra gear that your after but if the casing are the same there shouldnt be a prob.

[laserracer]

Has anyone tried to fit a WR450f gearbox into a YZ450f? Or anyone know if its possible to fit? Talking 07 models here. Havent been into the dealer to ask, thought Id try here first, cheers.

Check out the yamaha 450 forum on thumpertalk...seem to remember an artical on there on how to do it...here ya go hope the link works
http://www.thumpertalk.com/forum/showthread.php?p=7068622#post7068622