yz450f top end?

[DLpimp4lyfe15]

I have a yz426f hybrid,does a yz450f motor bolt up the same as a yz426 motor?

[hontrx265r]

no... But I have a couple complete nice ported heads for 426 if you need.

[chopp124]

all i had to do to swap to 450 was slot my lower mounts. looks like **** but you cant see it anyway so **** it. you can put all the 450 **** on a 426 motor as well. but it has to be everything, crank,cyl,piston,head,timming chain etc. i dont notice much difference in power between the 2. 426 has better top end power. i have a 450 and 426 hybrid