The YZ 80 is faster. It has a wicked power band.
yz 80
cr80 is faster because it is lighter and the rm80 has more power but the cr80 is lighter and its still pretty powerfull so if your looking for a motorbike look for the cr80 more then the rm80
yz
Faster than you are in bed.
Yes it can! How much work I do not know. I saw an 80 a few years back with a 125 engine in it. I just got cr80 and I'm going to put a 125 engine in it, just to play with people at the track. I'll let you know how hard it is.
The kx 80 goes way faster it goes 65 If u have a pro circuit pipe it will go 70-75 The yz 80 goes 50-55 if u have a pro circuit pipe it will go 55-67
CR will run longer YZ is a little faster.
yz 80 B
yz
different cc
goes 80 MPH
yz 85 will smoke it!!