MALL GP:(GENERAL PURPUSE): YEAR INTRODUCED: 1955 YEAR DISCONTINUED: 1956 ENGINE DISPLACEMENT: 5.0 cu. in. (82cc)CYLINDER BORE: 2.06 in. (52mm) PISTON STROKE: 1.50 in. (38mm) CYLINDER TYPE: Chrome Plated Aluminum INTAKE METHOD: Reed Valve ADVERTISED H.P.: 3 Brake Horsepower