The all-new HSR-Benelli S4 Jet Ski ($15,000) is built for power and speed. Along with a 4-stroke turbo charged engine at your disposal, the S4 is offers smooth acceleration as well as 110 horses for extra power.  The S4 also features an electric start, hydraulic trim system, aluminum handle pole, aluminum ride plate, and a sturdy fiberglass hull to provide better stability and handling.