Through a partnership with legendary automaker, Porsche, and their world-renowned team of engineers, Harley-Davidson created a revolutionary engine. The final result was something uniquely Harley-Davidson, the industry's most perfect blend of torque and horsepower in the high revving V-Twin Revolution® engine. Fuel injection. Dual overhead cams. Liquid cooled. 122 horsepower. Massive, brute power behind pure Harley-Davidson innovation and style.