Mercury 500 HP Racing V8 Outboard Motor with Electro-Hydraulic Steering, Trim and Tilt, and Ultra-Long Shaft

The Mercury Racing 500 XXL is a 4-stroke outboard marine engine designed for high-speed performance boats, race boats, and offshore sport boats requiring an ultra-long shaft. It features 500 HP / 372 kW and a 4600 cc V8 (8 Cylinder) engine. The Racing series is Mercury's high-performance focused outboard engine group. Maximum power and speed are targeted with a supercharged V8 engine block and Racing ECU calibration.

Racing 500 XXL Series Features and Technology Advantages

The supercharged design provides much higher power output at the same displacement compared to naturally aspirated alternatives. The charge-air cooling system cools the charge air, increasing combustion efficiency. The AMS electro-hydraulic steering ensures precise maneuver control at high speeds.

• V8 (8 Cylinder) Engine (4600 cc): Supercharged design provides much higher power output at the same displacement compared to naturally aspirated alternatives
• Ultra-Long Shaft (635 mm (25")): Propeller operates at optimum depth at the correct transom height
• Supercharged Engine: Maximum boost pressure and power with charge-air cooling
• Electric Start: Instant activation with key or button — comfortable and quick starting
• Power Trim & Tilt: Adjust trim angle with a button during navigation — fuel efficiency optimization; full motor tilt up with tilt
• External Fuel System (Floating Type): Connection for large capacity external tank — range determined by user needs

Ultra-Long Shaft — Which Boat Type Is It Suitable For?

The ultra-long shaft (635 mm (25")) keeps the propeller at an optimum depth in large yachts and professional boats with deep transom designs. Incorrect shaft selection can leave the propeller out of the water or drag the bottom — measure transom height before installation.

Technical Specifications

Who Is This Engine For?

• High-speed performance boat: Maximum speed with Racing supercharged configuration
• Offshore racing and sport boat: Precise maneuver at high speed with AMS electro-hydraulic system
• Multi-engine speed-focused configuration: Coordinated power with DTS synchronization
• Speed record and sport performance goals: Mercury Racing engineering

Maintenance and Longevity

4-stroke Mercury engines operate smoothly for many years with regular oil changes and end-of-season maintenance protocols. Impeller control of the water-cooled system should be done every 100 hours or every two seasons. Freshwater flushing is mandatory after each use in saltwater.

Related maintenance categories: Maintenance Kit | Engine Oil | Impeller | Mercury Spare Parts

Frequently Asked Questions

Which boat type is the Mercury Racing 500 HP engine suitable for?

The Racing series is developed for speed-oriented performance boats with 500 HP of power. It provides maximum performance in offshore race boats, catamarans, and high-speed sport boats. Weight optimization and power density are priorities for this segment.

How does a supercharged Mercury Racing engine work?

The supercharged system provides the engine with a higher air-fuel mixture than standard atmospheric pressure. The charge-air cooling system cools the charge air, minimizing the risk of detonation and maintaining continuous maximum boost pressure.

How is Racing series maintenance performed?

Racing engines require a special maintenance protocol suitable for high-performance use. Beginning-of-season and end-of-season services should be performed at authorized Mercury service centers. Oil quality and change intervals may be more frequent than standard FourStroke engines.

Which boat and boat brands are compatible with the Racing 500 XXL?

Mercury outboard motors are compatible with many fiberglass, aluminum, and inflatable boat models thanks to their universal transom clamp or transom mounting system. The only criteria are your boat's 635 mm (25") transom height and the maximum engine power approved by the manufacturer. You can get compatibility confirmation from Clever Marin by sharing your boat model.

Related Products and Categories

• Mercury Outboard Motors
• Mercury Marine Products
• Mercury Spare Parts
• Mercury Racing 150–300 HP
• Mercury Racing 350–500 HP
• Outboard Motors
• Boat Engines
• Maintenance Kit
• Impeller
• Anode

Is It the Right Configuration for Your Boat?

Share your boat model, transom height, and intended use — let's confirm the suitability of the Mercury Racing 500 XXL engine for your boat and the correct shaft selection together.