yfz450 motor in 250r frame?

[DLpimp4lyfe15]

I have a yz426 hybrid with 250r geometry,will a yfz450 motor out of a quad bolt up the same as the 426 dirtbike motor?

[kyledvor61]

No. the bottom motor mounts are different, and something with the front sprocket is different, like offset. theres a thread in the lounge on yfzcentral somewhere.