by JimDirt » Sun Feb 28, 2016 8:59 pm
Are you asking if the cases will interchange , or the crank ??
The cases are different 02-04 where the engine mounts go (i believe its just the front mount that is different , but not 100% positive), but i "think" if you swap the later model motor mounts and spacers and bolts to the frame , i "think" it will swap , but i have not tried it myself
The cranks should be the same , as should be the cylinder/head as far as bolt on goes from 02-08
PM Ken , and he can tell you for sure what will swap or what is needed to make the swap
2020 CRF450R
2006 CRF450X

Weiser , Idaho