MONSTER SUPERBIKE Designed for the most experienced riders who expect the very best in terms of technology, performance and components, the Monster S4R S Testastretta sets new standards for the Monster family with the application of Ducati experience gained in the World Superbike Championship. For unparalleled power, road holding and sheer excitement—all in a uniquely styled motorcycle that is distinctly Ducati—the Monster S4R S is the choice for discriminating enthusiasts. The liquid-cooled, four-valve per cylinder, 998 Testastretta L-Twin engine features a 100 mm bore and short stroke of 63.5 mm to limit average piston speed and allow increased rpm. The result is a staggering 130 horsepower and 10.6 kgm of brute torque. SMOOTH POWER, UNPARALLELED COMPONENTS Testastretta technology allows a reduced angle between the intake and exhaust valves resulting in a clean, compact combustion chamber that is highly efficient. The perfectly smooth combustion environment and linear flame front inside the specially designed heads combined with cutting-edge electronic engine control technology guarantees precise combustion throughout the rev range. This design not only provides a smooth and potent power delivery but also ensures that the Monster S4R S Testastretta complies with stringent Euro 3 emission control standards.