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Which size piston?

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Im looking to order a piston for my 2011 kx250f and would like some opinions.  Im pretty sure stock is 76.96mm but on a used cylinder would it be smart to go with a slightly bigger one as in 76.97mm? I ask because this is common on 2 stroke motors just not sure as this is my first 4t.

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Anyone?

You should get a 77mm Wiseco piston kit for $153.99 from Rocky Mountain plus a Tusk complete gasket kit for $44.99 and save the gaskets you don't use for later. Works for me every time.

Plus free shipping!

Edited by Dragon67

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