MALL 2 MG: ASSEMBLY NUMBER: 40000 YEAR INTRODUCED: 1953 YEAR DISCONTINUED: 1965 ENGINE DISPLACEMENT: 6.45 cu. in., (105 cc) CYLINDER BORE: 2.25 in., (57 mm) PISTON STROKE: 1.625 in., (41 mm) CYLINDER TYPE: Porous Chrome Plated Aluminum INTAKE METHOD: Reed Valve ADVERTISED H.P.: 5 Brake Horsepower