Cylinder / piston fit YZ250 2004

Hello everybody,

I bought a new geniune cylinder marked with the letter B, but the piston is marked with the Letter C. Someone knows the difference between both? Difference in measures?

I have fear to dammage the new cylinder with the C piston. It is possible that they fit in a good way?

I hope somebody can help me.

Best regards from Chile


Put the piston into the cylinder and measure. I bought a "B" stamped cylinder and ended up with "D" sized piston to get piston clearance.

Thanks for your reply ;)

So you mean that the letter doesn't matter?

sometimes yeap, not always though. IMO machinery gets older and nowadays we ready have to suffer the effects of lacking management controls.

I will measure them ;) I was worried about the marked letters

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