Piston kx125

dahl-35
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DK
dahl-35
Hello, i have just picked up a Old kx 125 from 2001.
The piston that is in it now is says “B”
Will that mean the next most be a size “C”?

Sorry for bad english.

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Paul_Pitzonka
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Paul_Pitzonka 7/18/2020 3:47pm
7/18/2020 3:47pm Edited Date/Time 7/18/2020 3:48pm
Measure the bore to make sure it’s still in spec... Then choose a piston based upon your results and recommended piston to wall clearance... By theory it should be a C but that’s not always the case...
1
HighPlainsSquid 7/18/2020 8:59pm
7/18/2020 8:59pm
I don't think I've ever run anything but a B in a KX 125. The differences are incredibly small.

Paul gave better advice, though.
Paw Paw
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Paw Paw 7/19/2020 5:51pm
7/19/2020 5:51pm Edited Date/Time 7/19/2020 5:51pm
Either piston will work fine if the cylinder bore is good.

Paw Paw

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