2022 Mercury Marine® Pro XS 115 Extraordinary engineering for extraordinary speed. When you're feeding your need for speed, Mercury Pro XS engines will get you there faster. Engineered to meet the demands for high speeds on fresh or salt water, these high-performance motors deliver a winning combination of power, acceleration, durability, and fuel efficiency. ENGINE DETAILS Ideal for a wide range of fresh and saltwater boats. Great for compact bass, multi-species, flats and bay boats, and pontoons.