2026 Mercury Racing 400R 20 in

SPORT MASTER GEARCASE
The race-proven Sport Master gearcase is a surface-piercing design intended for boats capable of exceeding 85 mph, and features low water pick-ups and a crescent leading edge to maximize speed and efficiency. It also features a 1.60:1 gear ratio.

5.44 HD GEARCASE
The Mercury Racing 5.44 HD gearcase option is ideal for heavy bay boats and multi-engine performance center console boats that require a more-submerged gearcase and benefit from added stern lift. It features a 1.60:1 gear ratio.

POWER TO THE WATER
The new Mercury Racing® Ventera™ propeller is designed to handle big outboard horsepower on fast center consoles, day cruisers and bay boats. This 15-inch diameter, four-blade prop was engineered specifically to carry more load with greater efficiency at high speeds and in semi-surfacing installations.

87 OCTANE
Experience thrilling performance and full power on readily available 87 octane (91 RON) fuel. Advanced Range Optimization utilizes electronic sensors to precisely adjust the fuel mixture for the best-possible efficiency at all speeds.

ADAPTIVE SPEED CONTROL
Adaptive Speed Control maintains engine RPM as load changes due to sea conditions or turning maneuvers to maintain boat authority with less control input.

150 AMP ALTERNATOR
A powerful 150 amp alternator and Idle Charge battery management help maintain battery charge on boats rigged with power-hungry electronics and audio.