A 1997 rm 125 can go around 60mph.
about 80 mph
piston get stucked in the cylinder
85 mph
With stock gearing around 63 mph
stock gears around 75-80mph
replace the cylinder gasket and check for cracks and replace the head gaskets
These (link below) are for a 08 RM 125.
Will a 94 rm 125 engine fit on a 2000 rm frame?
no
There is a big difference the rm is much faster
yes