Just finished a 2002 KX 125, 2mm overbore, top end rebuild and used a 56mm Cometic head gasket kit.
I'm currently rebuilding my stock 1999 125 and Cometic shows the 56mm and 58mm but no 54mm top end gasket kit in their catalog.
Did I use the wrong one on the 56mm cylinder or does the 56mm kit serve the stock 54mm bore as well?