How do I tell the difference between a RM250 & RM125?

mikebnascar8

Member
Nov 20, 2006
1
0
I am going to look at a 1991 RM250 Tonite to purchase. How do i make sure it is what he says it is? Is there a # on the engine that will tell me if its a 250 or 125? Or is there an easier way just by looking at it? If you can help me out I would really appreciate it! Thank You!

mikebnascar8 @ aol
myspace / mikebr1
 

Tony Eeds

Godspeed Tony.
N. Texas SP
Jun 9, 2002
9,535
0
Good question that I don't know the answer to.

I am going to move this in hopes you get a quick answer.

Als, Howdy and Welcome to the site!
 

flattie

Member
May 19, 2005
148
0
easiest way to tell is look at the pipe.......125 will come out of the head and do a right turn....250 will come out of head and make a left turn first then a right turn... ;)
 

RocketRaccoon

~SPONSOR~
Damn Yankees
Nov 7, 2006
258
0
The kickstart lever on a RM125 is short and stubby. It ends a few inches below the exhaust pipe. The 250 is much longer and actualy goes over the exhaust pipe by a couple of inches. For your own reference...look at some pics before you go. A good site is www(dot)bikepics(dot)com. Hope that helps and good luck with the bike. :cool:
 

mongial

Member
Oct 28, 2006
81
0
If I recall correctly (my 02 says 249cc on the cylinder), while helping a friend rebuild an 89 RM125, the left side of the cylinder will say the cc's.
 

kawicam250

I bleed green!
Member
Aug 7, 2006
1,162
0
i agree with all of these responses. the easiest way i tell the difference is to look at the pipe. if your looking at a photo of the right side of the bike, a 125 pipe will be thin at first but will gradually get fatter, whereas a 250 pipe will be fat at first and gradually get thinner.
 

XRpredator

AssClown SuperPowers
Damn Yankees
Aug 2, 2000
13,504
19
the easiest way is to look at the displacement on the side of the cylinder.
 

dmdee99

Member
Apr 24, 2006
123
0
The displacement on cylinder is the dead give away.
 

crazshane

Member
Oct 22, 2006
33
0
Look at the cylinder and it's right there in cc. If you're too far away though you might use the other suggestions. :cool:
 
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