Take To The Water With Confidence. Nothing beats a day on your boat when you know it's powered by the perfect engine. OptiMax is outfitted with innovation features designed to let you enjoy every available minute - features like its tow-stage direct injection fuel system, ultra-reliable components and "smart" electronics that give you confidence to go as far as you like.

No direct injection engine has more experience, testing, or success under its belt than Mercury OptiMax. It's not surprising that OptiMax repeatedly leads every direct injection category � including power, fuel efficiency, reliability, and versatility. It all adds up to a complete line of power that delivers more, and delivers it better. OptiMax remains the best value on the water and a top choice of boaters.

Mercury Optimax Overview

A legend in the making, durable, reliable and virtually maintenance-free, OptiMax is the most proven DI engine in the marine industry. The other guys can't compete with OptiMax acceleration or top speed. Our 2-stage DI system provides a consistent supply of atomized fuel and air for lightning-fast hole shots.

Hot Topics: OptiMax Pro-XS

Meet your need for speed with OptiMax Pro XS.

Mercury Smartcraft Digital Throttle Control

The SmartCraft Digital Throttle & Shift (DTS) System was designed to bring digital precision to engine throttle and shift. By offering unmatched, smooth shifting and lightning-fast throttle response, the DTS System provides effortless control, as well as proven and reliable performance every time. Once you try a Mercury DTS System, you won't want to use anything else.

Optimax 150 ProXS

Mercury pioneered direct fuel-injection technology with OptiMax. Ever since, these engines have set the bar to be the industry�s low-emission, high-performance leader. But it doesn�t end there. OptiMax ProXS uses carbon fibre technology to further enhance performance.