Standard bore size mm
ENGINE 2 stroke single cylinder direct reed valve crankcase induction Liquid cooled 125 cc engine Cylinder size 124 8 cc Bore and stroke 54 x 54 5 mm 200 cc engine Cylinder size 175 3 cc Bore and stroke 64 x 54 5 mm 250 cc engine Cylinder size 247 7 cc Bore and stroke 72 5 x 60 mm 280 cc engine Cylinder size 272 2 cc Bore and stroke 76 x 60 mm 300 cc engine Cylinder size 294 1 cc Bore and stroke 79 x 60 mm I Cant put periods or commas so bare with me
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