88 RM125/250 swing arms- same????? - Motorcycle-Journal Forums

Greenbush · 02-21-2006, 12:12 AM

Hello-
I was taking in my 88 RM250 engine because the gear box or crank was jammed. This has turned out to be a piece of the piston skirt that has dropped into the crank case(little sigh of relief). We were worried that a gear had broke or a tooth from a gear had broke off, and jamming up the gear box.
Anyway, I was attempting to take the engine out I noticed when I went to take the swing arm bolt out that there is a crack horizontally across the swing arm pivot bearing journal. Plus the swing arm bolt would not come out. The bearing sleeve had bonded to the bolt, so I had to cut swing arm bolt out.

NOW FOR MY QUESTION: IS A 1988 RM125 swing arm the same as a 1988 RM250 swing arm?? I have access to a 125 swing arm. If I can use it then I won't have to get mine welded or what ever needs to be done.
Help me out guys and gals.
Thanks

Dave2122 · 02-21-2006, 09:24 PM

125 and 250 are completly different.
Send me an email as I have a friend that has a 1988 RM250 that is complete and he only wants 100 doillars for the whole bike. Would be a great deal for you as these 1988 RM250 bikes are the rarest RMs ever made.

02-21-2006, 12:12 AM	#1 (permalink)
Greenbush Newbie Joined: Feb 2006 Posts: 2	88 RM125/250 swing arms- same????? Hello- I was taking in my 88 RM250 engine because the gear box or crank was jammed. This has turned out to be a piece of the piston skirt that has dropped into the crank case(little sigh of relief). We were worried that a gear had broke or a tooth from a gear had broke off, and jamming up the gear box. Anyway, I was attempting to take the engine out I noticed when I went to take the swing arm bolt out that there is a crack horizontally across the swing arm pivot bearing journal. Plus the swing arm bolt would not come out. The bearing sleeve had bonded to the bolt, so I had to cut swing arm bolt out. NOW FOR MY QUESTION: IS A 1988 RM125 swing arm the same as a 1988 RM250 swing arm?? I have access to a 125 swing arm. If I can use it then I won't have to get mine welded or what ever needs to be done. Help me out guys and gals. Thanks

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02-21-2006, 09:24 PM	#2 (permalink)
Dave2122 Sprocket Pilot Joined: Sep 2004 Bike: Which one of the 9? Location: USA Posts: 887	125 and 250 are completly different. Send me an email as I have a friend that has a 1988 RM250 that is complete and he only wants 100 doillars for the whole bike. Would be a great deal for you as these 1988 RM250 bikes are the rarest RMs ever made.

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