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Koso 150CC Big Bore Kits DY640000
Koso DY640000 150CC Big Bore Kits. This is a competitively priced product. Includes a ceramic coated cylinder, 61mm forged piston, rings, pin, pin clips, gasket kit, and banjo bolts Compression ratio of 11.5 to 1 allows the use of premium pump gas to keep the reliability of the stock motor.