TFC 63mm Cylinder and Stroker Crankshaft Kit - GY6
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63mm TFC cylinder and head, A8 high lift cam, and +3.0mm stroker crank kit for GY6 150cc vehicles with A-case engines. 190cc displacement!  Cylinder Bore: 63mm Cylinder Stud Spacing: 54mm (A Case) Exhaust Valve: 23mm Intake Valve: 28mm Cylinder Skirt Outer Diameter: 65mm +3.0mm Crankshaft (60.8mm Stroke) Made in Taiwan GY6 QMI/QMJ 152/157
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