The 5.44 HD gearcase was designed and engineered by Mercury Racing for the most demanding offshore environments and features a larger 5.44″ diameter torpedo that provides extra lift for heavier boats. This is a highly durable gearcase for heavier center consoles, walkarounds, pontoons and deckboats.
Designed primarily to power performance center console boats and catamarans to speeds well beyond 75 mph, the V10 400R offers more power and a higher RPM range than any outboard in this category.
400r
Tuned up with Mercury Racing components to deliver blistering speed, the V8 4.6L 300R outboard delivers crisp throttle response, thrilling top-end power and confident control, the perfect match for a wide variety of high-performance boats.
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