On the Polaris msx, everything is dialed in for the ultimate day on the water, beginning with a 150hp or 110hp Turbo Four-Stroke engine. Impressively equipped, these Polaris Marine powerplants deliver outstanding power-to-weight ratios and class-leading performance across the board. Both feature a Bosch multi-port electronic fuel injection system for instant starts, smooth operation and superior throttle response. Dry-sump lubrication and a closed-loop cooling system assure trouble-free performance. Of course, performance doesn’t come at the expense of the environment: Both Turbo Four-Strokes meet California Very Low Emissions Standards. And if you prefer a direct injection engine, a 140hp High Output Direct Injection msx is also available.