Evinrude E-TEC includes both new technologies and improvements to existing technologies. We've built these technologies onto existing and proven - durable, reliable platforms. For example, our 2-cylinder 40 through 60 horsepower Evinrude E-TEC outboards are built on the mid-section and gear case of the 55 horsepower Commercial series outboards. In fact, the Commercial outboards are the basis for the outboards the U.S. Navy Seal Teams and U.S. Marine Corps Recon Teams rely upon during their assigned missions. The 3-cylinder 75/90 horsepower Evinrude E-TEC outboards are built on the mid-section and gear case of the 60 degree V4.