The legendary NINJA® ZX-12R motorcycle engine provided the starting point for this award-winning JET SKI model. While the bore is the same as that of the smaller JET SKI STX-12F, the stroke is 13.8mm longer, increasing displacement to 1,498cc. This long stroke design delivers a flat torque curve for a smooth spread of power across the entire rpm range. Dual overhead cams, four valves per cylinder, fuel injection and electronic engine control, which harmonizes the fuel and ignition systems, provide maximum performance and reliability.