Big bore 125m piston find.

[125Mmadness]

246392

Found an NOS 125m 3mm over piston on ebay the other day, I knew they made these but have never seen one until now. I bought a .50mm over high comp piston a few months ago as well so now I have 2 rare 125m pistons. the 3mm over piston also has a slight dome, not as much as my actual high comp piston, but more than stock.
In the picture the piston order is stock, cb200, 3mm over, and high comp

[ponderinjunkman]

What are the differences between stock and the CB200 piston? Or are they interchangeable?

[125Mmadness]

the cb200 piston gives you tons more compression but you have to modify the skirts on the cb200 piston to clear the counterweights on the 125m crank. I had one in my old 125m with just a stock cam and that thing was FAST compared to when it was stock.