What "size" piston without removing barrel
Is there an easy way to determine which letter piston is in your bike without removing the barrel? I have heard that GasGas stamps a letter on the barrel area just above the intake, but my '06EC300 has no letters, only numbers. My piston has now run a year with about 3900km's on, and while I can feel no power loss, it is probably time for a new setup. Do Vertex and Athena sell piston kits through the net, or are there any delaers on this site who sell them?
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