[60CC 44mm]
-Bore/Piston Outer Diameter: 50cc (39mm)/60cc (44mm)/80cc (47mm)/100cc (50mm)/125cc (52.4mm)/150cc (57.4mm)/150cc Plus(58.5mm) -Ring Thickness:50cc(0.8*0.8*2mm)/60cc(1*1*2.5mm)/80cc(1*1*2mm)/100cc(1*1*2mm)/125cc(1*1*2mm)/150cc(1*1*2mm)