1981 Suzuki Rm 125 bore up

The Nutty Professor
Edited Date/Time 1/26/2012 2:47pm
I just bought a semi basket case RM 125 and I plan to do a frame up re-build. I've rebuilt a couple bikes and this is a hobby I enjoy. Since I'm going to have the motor torn down I plan to bore the cylinder up and want to know how big I can go. I've searched around but there don't seem to be many answers or any to the question. I try no to do things half way but I don't like spending money needlessly either. Thanks ahead.
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CamP
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Colleyville, TX, USA
CamP 5/24/2011 11:11am
5/24/2011 11:11am
Back when I raced an '82 RM125, there was a 56mm OEM Suzuki piston, +2mm overbore, that worked perfectly. Unfortunately, that was a long time ago so I don't remember what bike originally used it.

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