CAST-I-CYLINDER KIT X 47 pin X 12 code = 31 9987 KYMCO KYMCO DINK 50 2t KYMCO PEOPLE 50 2t KYMCO TOP BOY - COBRA 50 2t sometimes the pictures might be different from the product which they refer to, as concerns some details CAST-IRON D.47 CYLINDER KITS Malossi cast-iron cylinder kits: the best balance between component performanceand life of the component. The cast-iron cylinder kits produced by Malossi s.p.A. are designed and manufactured with the specific abjective of obtaining high combustion efficiency, long life, and a reliability that suits the Malossi name. Owing to the experience gained in the preparation of cylinder kits for race, Malossi engineers have developed the thermodynamics of cast-iron cylinder kits to the fullest and designed the inner fuid mechanics of the cylinder kit with fanatical precision (see the tranfer pipes, exhaust and combustion chamber), thereby obtaining a high level of turbolence in the combustion chamber. The latter has permitted a substantial reduction in specific consumption and a drastic reduction in the exhaust emission of pollutants. Technical features - Material: wearproof, laminate special cast iron - Recalculated heat exchange surfaces - NC machine-tool machining - Transfer and exhaust disigned for maximum efficiency - Lightened and reinforced, special aluminium alloy pistons with a high silicon content - Optimized compression ratio - Very high turbolence combustion chamber