This paper presents the results from the investigation of the ceramic-metal FGM (functionally gradient material) plating application on small high-speed gasoline engines for motorcycles. Influences of ceramic-metal FGM plating on the engine dynamic performances, exhaust emissions, and durability have been extensively studied through experimental and analytical work. The tests show that when the engine is plated, the output can increase by 5.6%similar to12%, the brake specific fuel consumption can decrease by 8%similar to10%, and the CO and HC emissions decrease by about 30% and 25% respectively. The analysis indicates that when the engine is plated, the friction coefficient between moving parts decreases so that the frictional losses of the engine reduce. Moreover, FGM plating can effectively shorten flame quenching distance, which is the main factor to improve engine dynamic and exhaust emission performances.