2025 Mercury Racing 500R

The 2025 Mercury Racing 500R is a high-performance outboard engine designed for luxury sport boats and offshore racing applications. It delivers 500 horsepower (372 kW) through a supercharged 4.6L V8 engine, offering exceptional acceleration and top-end speed.

 Key Specifications

• Engine Type: Supercharged 64° V8, 32-valve DOHC

• Horsepower: 500 hp (372 kW)

• Displacement: 4.6L (281 cu in)

• Induction System: Supercharged with charge air cooling and electronic boost control

• Full Throttle RPM Range: 6,000–6,600 RPM

• Fuel Requirements: Unleaded regular 89 octane minimum (R+M/2) or 95 RON

• Cooling System: Air-cooled

• Alternator Output: 115 amps / 1,449 watts

• Steering Options: Hydraulic or JPO Electric

• Trim & Shift: Digital Throttle & Shift (DTS)

• Oil Requirement: MRX 10W-30 or Mercury 10W-30 Full Synthetic

• Gearcase Options: 5.9″ R-Drive and R-Drive Sport

 Performance & Design Enhancements

• Increased Torque: Offers 10% more torque than the 450R, with a 26% increase in supercharger boost pressure, resulting in improved acceleration and performance.

• Advanced Gearcase: Features a 5.9″ R-Drive gearcase with a crescent leading edge and long aspect torpedo, optimized for submerged, semi-surfacing, and full surfacing applications.

• Enhanced Midsection: The Advanced Racing Core midsection includes trim booster rams, reduced trim speed, and stiffened engine mounts for improved handling and durability.

 Racing & Industry Adoption

The Mercury Racing 500R has been adopted as the official power for the APBA Factory Stock offshore racing class, replacing the 450R. This transition marks a significant step in competitive offshore racing, starting with the 2025 season. speedboat.com