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Big Power. Big Versatility. Big Durability.

At a full 520 horsepower, Mercury Racing’s 520 sterndrive opens the door to a family of expertly designed, hand-built performance engines. Don’t let the fact the 520 is the smallest engine in the Mercury Racing sterndrive offering fool you. The torque from even one of these engines is enough to sit you back in your seat.

520 engine

Expertly
Designed

Specs

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Facts & Figures

RATED HP AT TRANSOM

520

FULL THROTTLE RPM

4800-5200

DISPLACEMENT (L)

8.6L

COMPRESSION RATIO

8.7:1

PRODUCT DETAILS

Cylinders / Engine Configuration V8
Fuel Requirement 87 Octane Minimum (R+M/2), (91 RON) Global
Fuel System Sequential Fuel Injection
WARRANTY 2-Year Limited For Recreational Boating
BORE & STROKE 4.56 x 4.00 IN/115.8 x 101.6 MM
ALTERNATOR (AMP) 65 AMP
CONTROLLER PCM
DRIVE UNIT Bravo One XR, Bravo One XR Sport, Bravo One XR Sport Master (Std. & Short), Bravo Three XR; (Integrated Transom System Optional)
LENGTH (IN) - FROM BACK OF BLOCK 34.2 IN
WIDTH (IN) 33.8 IN
HEIGHT (IN) 24.2 IN
WEIGHT (LBS) 1218 LBS

Compatible Drives

Drives

Bravo One XR

Intended for single, twin and triple applications with engines up to600hp in boats capable of up to 85 mph top speed. The Bravo OneXR® is designed for high-performance applications, with dual water pickups, heavy-duty U-joints, a heavy-duty stainless steel prop shaft, billet aluminum bearing carrier, upgraded upper thrust bearings and net forged straight cut bevel gears for enhanced strength.

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bravo motor
master engine

Drives

Bravo One XR Sport Master

The surfacing Sport Master gearcase offers heavy-duty durability for boats that travel in excess of 85 mph, with four-slot low water pick-ups and a crescent leading-edge design that reduces drag as much as possible to maximize efficiency and speed. The one-piece gearcase housing and skeg are precision CNC machined for perfect symmetry that results in improved handling at higher speeds.

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Drives

Bravo One XR Sport Master Short

The same super hydrodynamic design as the Sport Master, with a two-inch shorter length. This permits lowering the transom X dimension by two inches, and mounting the engine two inches lower in the boat, while maintaining an optimal propeller position. Gain engine hatch clearance and lower overall center of gravity for improved handling.

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bravo one xr sport master short
bravo three xr engine

Drives

Bravo Three XR

The ideal drive option for Mercury Racing 520 engines in heavier cruiser boats. Heavy-duty components plus dual contra-rotating propellers provide added blade area to help lift a heavy boat out of the hole. The Mercury Racing Bravo Three XR® prop sets feature added cup to combat cavitation in higher horsepower applications. A large-diameter four-blade forward propeller followed by a smaller diameter three-blade aft propeller offer incredible handling, improved fuel economy at cruise speed, and improved boat control around the dock.

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Compatible parts & Accessories

Parts & accessories

Joystick Piloting

Eliminate the stress of positioning or maneuvering a performance boat in tight spaces during less-than-ideal situations. Focus instead on the total confidence of being effortlessly, intuitively, and completely in control of your boat. Mercury Joystick Piloting for Outboards combines throttle, shift and steering control in a single joystick designed for maximum maneuverability at lower speeds. It’s part of the complete SmartCraft package, which includes Digital Throttle & Shift, Skyhook digital anchor, integrated AutoPilot and VesselView® displays.

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Joy stick
Controls

Parts & accessories

Digital Zero Effort Controls

Digital Zero Effort Controls replace the lag and hesitation of traditional throttle and shift cables with digital precision, resulting in smooth shifting and instant throttle response. Ergonomic design features short-throw levers for effortless shifting and ultra-fast throttle response, and the robust stainless-steel levers offer unmatched durability in the offshore environment. Digital Zero Effort Controls can provide automatic throttle synchronization and shadow mode for up to six engines (where two levers operate six engines) and go hand in hand with engines equipped with Mercury’s exclusive Joystick Piloting for Outboards (JPO) technology.

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Parts & Accessories

X-hAust sound Tuning

Mercury Racing's exclusive X-Haust Noise Reducer features a fully integrated sterndrive exhaust noise reduction system. X-haust was developed primarily to bring the HP600 SCi and EU662 SCi sterndrive engine packages, already certified by the European Union Recreational Craft Directive (RCD) requirements for exhaust emissions, in compliance with the stringent RCD noise regulations.

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520 engine

Parts & Accessories

INTEGRATED TRANSOM SYSTEM (ITS)

The Integrated Transom System (ITS), developed for use with Bravo sterndrives, features integral power steering cylinders, making the transom more aesthetically pleasing and simplifying installation.

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