Hey there Jonny,

Firstly thanks for taking the time to reply. I have been checking out MotorCycleProducts a lot recently putting together my wish list of things I want for my machine. I have found in general though that searching for spares for the early ns125 seems to come up with a lot more returns than its big brother the 250. I believe this is because they brought this machine into Europe and didn't bring the 250? The only thing I don't know is how compatible they are? As for pistons well the closest I have found is the ns125 which measures 56 x 50 which according to the info I have seen is 0.6mm out on the stroke. It would be great to hear back if you find out any more info Jonny.
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Steve T
1986 NS250R MC11