This powerful four-cylinder four-stroke has a chip on its shoulder. Actually it's more like a block � a big-block inline power head with a class leading 174.9 cubic inches of displacement. Suzuki's DF150 may be compact and lightweight, but it packs a heavy punch. All these cubes, together with advanced features like dual overhead cams, enhanced air intake system with multi-stage induction, and sequential multi-point electronic fuel injection ensure plenty of smooth power on tap. Superior torque and powerful gearing with a 2.5:1 final drive ratio help even heavy boats jump out of the hole and quickly accelerate to eye-watering top speeds.