The 2009 Harley Davidson XR1200 is powered by the familiar air-cooled Evolution engine, measuring 73.40 cubic inches and making 90 horsepower and 73.8 lb-ft of torque. The Kawasaki Z1000 is powered by a liquid cooler dual overhead camshaft 4-cylinder engine. This 58.15 cubic inch engine makes a reported 123 horsepower, and 72.8 pounds. However, the Harley Davidson makes its peak torque at 4,000 rpm, where the Kawasaki does so at 8,200 rpm (and 10,000 for its peak horsepower).