Handcrafted by Mercury Racing for the high-performance disciple craving unrelenting power, the Mercury Racing 450R makes the paramount performance statement. Boosted by an exclusive Mercury Racing supercharger, the 4.6-liter V-8 FourStroke powerhead delivers 450 peak horsepower while staying 136 Kilos lighter than the nearest competitor. Run wide open, without compromise.
The Mercury Racing 450R is available in Cold Fusion White and the legendary Mercury Phantom Black. Cold Fusion White models are finished with Devil Red Eye cowl accent panels and white Advanced MidSection (AMS) and gearcase. Black models are finished with Graphite Gray cowl accent panels and matching Graphite Gray AMS and gearcase. Devil Red Eye, Graphite Gray and Carbon Fiber accent panel kits are available to
custom-match a 450R outboard to a boat color scheme.
Each ounce was scrutinized to achieve maximal power with minimal weight. The Mercury Racing Advanced MidSection (AMS) features heavy-duty guide plates and stiffened engine mounts to stabilize the outboard for enhanced high-speed handling.
The AMS also isolates the powerhead from the transom to ensure run quality is smooth and quiet at all speeds. An optional rear tie-bar bracket integral to the AMS provides a strong, ultra-light mounting point and uncluttered installation for catamaran and other high-speed applications. The 450R is offered with a choice of the 5.44-inch HD gearcase for traditional, submerged applications or, for boats capable of speeds over 136 km/h, the surface-piercing Sport Master gearcase with a new one-piece stainless steel propshaft.
Mercury Racing applies its supercharging expertise to extract incredible power from the 4.6-liter V-8. A 2.4-liter twin-screw supercharger delivers pressurized ambient air to the intake tract for instant throttle response. The supercharger is water-cooled to reduce the temperature of the intake charge and increase power. A boost bypass valve automatically adjusts maximum boost pressure to maintain peak performance in response to changing ambient conditions. A custom-designed attenuator is tuned to cancel the harshest high-frequency supercharger noise.
The Mercury Racing 450R is fitted with a special high-capacity oil cooler and an exclusive poppet valve in the midsection to provide a higher volume of cooling-water flow on-demand. The valve train features a high-performance intake camshaft and race-spec Inconel exhaust valves. Wide-open throttle (WOT) operating range is extended to 5800-6400 rpm to expand propping options and maximize performance.
Mercury Racing V-8 outboards are engineered to be reliable and durable. These high-performance outboards are tested, tested and tested again – in the lab and on the water – in a never-ending quest to exceed the highest expectations. Run wide open with confidence.
Each ounce was scrutinized to achieve maximal power with minimal weight. The Mercury Racing Advanced MidSection (AMS) features heavy-duty guide plates and stiffened engine mounts to stabilize the outboard for enhanced high-speed handling.
The AMS also isolates the powerhead from the transom to ensure run quality is smooth and quiet at all speeds. An optional rear tie-bar bracket integral to the AMS provides a strong, ultra-light mounting point and uncluttered installation for catamaran and other high-speed applications. The 450R is offered with a choice of the 5.44-inch HD gearcase for traditional, submerged applications or, for boats capable of speeds over 136 km/h, the surface-piercing Sport Master gearcase with a new one-piece stainless steel propshaft.
Mercury Racing applies its supercharging expertise to extract incredible power from the 4.6-liter V-8. A 2.4-liter twin-screw supercharger delivers pressurized ambient air to the intake tract for instant throttle response. The supercharger is water-cooled to reduce the temperature of the intake charge and increase power. A boost bypass valve automatically adjusts maximum boost pressure to maintain peak performance in response to changing ambient conditions. A custom-designed attenuator is tuned to cancel the harshest high-frequency supercharger noise.
The Mercury Racing 450R is fitted with a special high-capacity oil cooler and an exclusive poppet valve in the midsection to provide a higher volume of cooling-water flow on-demand. The valve train features a high-performance intake camshaft and race-spec Inconel exhaust valves. Wide-open throttle (WOT) operating range is extended to 5800-6400 rpm to expand propping options and maximize performance.
Mercury Racing V-8 outboards are engineered to be reliable and durable. These high-performance outboards are tested, tested and tested again – in the lab and on the water – in a never-ending quest to exceed the highest expectations. Run wide open with confidence.
Performance without compromise. The fastest, most powerful outboard ever offered by Mercury Racing.
We’ve reset industry benchmarks across the board. Our engineers dreamed bigger and pushed harder. The results are truly exceptional.
Technology should make your time on the water easier, not challenging. Our innovations are user-friendly and cutting-edge.
The reliability to go Wide Open, all day. The 450R delivers unprecedented power with amazing efficiency. And it’s backed by a three-year limited warranty.
The 450R model is compatible with Mercury Racing Zero Effort Digital controls or any Mercury digital control system. Digital throttle and shift technology enhances the high-performance boating experience by providing smooth shifting and instant response while eliminating cable maintenance. Joystick Piloting for Outboards (JPO) is available for boats rigged with two to six outboards and provides intuitive, fingertip 360-degree boat control for docking and maneuvering in tight quarters plus the convenience of Skyhook® sea-holding features and integrated auto piloting.
An available Mercury VesselView offers more systems information and engine data than with any other display system in the boating industry. VesselView can simultaneously monitor the RPM, speed, fuel flow and efficiency, temperature, trim and more on up to six outboards on an
intuitive seven or nine-inch touchscreen display. VesselView also enables Advanced Sound Control, a dual muffler system that can be toggled between an ultra-quiet mode and a deep sport tone with a stirring growl on start-up.
| SPECIFICATION | 450R 5.44 HD | 450R SPORT MASTER |
| RATED HORSEPOWER | 450 | 450 |
| KW | 331 | 331 |
| IDLE RPM | 600 | 600 |
| MAX RPM AT FULL THROTTLE | 5800-6400 | 5800-6400 |
| CYLINDERS/ENGINE CONFIGURATION | V-8 [64 degree] with 32-valve Dual Overhead Cam [DOHC] |
V-8 [64 degree] with 32-valve Dual Overhead Cam [DOHC] |
| DISPLACEMENT (CUBIC INCH, CID) | 279 CID | 279 CID |
| DISPLACEMENT | 4.6L | 4.6L |
| BORE & STROKE (MM) | 92 mm x 86 mm | 92 mm x 86 mm |
| INDUCTION SYSTEM | Supercharged with Charge Air Cooling and Electronic Boost Control | Supercharged with Charge Air Cooling and Electronic Boost Control |
| MIDSECTION DESIGN | Advanced Midsection with heavy-duty guide plates and stiffened engine mounts for enhanced high-speed handling | Advanced Midsection with heavy-duty guide plates and stiffened engine mounts for enhanced high-speed handling |
| FUEL SYSTEM | Electronic Fuel Injection (EFI) Computer Controlled | Electronic Fuel Injection (EFI) Computer Controlled |
| FUEL REQUIREMENTS | 95 RON; 10% Ethanol Max | 95 RON; 10% Ethanol Max |
| IGNITION SYSTEM | SmartCraft PCM 112 Digital Inductive | SmartCraft PCM 112 Digital Inductive |
| CHARGING SYSTEM | 115-amp (1449 Watt) | 115-amp (1449 Watt) |
| STARTING | SmartStart Electric | SmartStart Electric |
| EXHAUST SYSTEM | Selectable | Selectable |
| COOLING SYSTEM | Water-cooled with thermostat control | Water-cooled with thermostat control |
| LUBRICATION SYSTEM | Integrated wet sump with oil cooler | Integrated wet sump with oil cooler |
| OIL REQUIREMENT | NMMA Certified FCW SAE 25W-50 | NMMA Certified FCW SAE 25W-50 |
| OIL CAPACITY (L) | 6.6 Liters | 6.6 Liters |
| ENGINE MANAGEMENT SYSTEM | SmartCraft PCM 112 | SmartCraft PCM 112 |
| THROTTLE AND SHIFT CONTROLS | Digital Throttle & Shift | Digital Throttle & Shift |
| ENGINE PROTECTION SYSTEM | SmartCraft Engine Guardian | SmartCraft Engine Guardian |
| TRIM/TILT SYSTEM | Power trim and tilt | Power trim and tilt |
| MAXIMUM TILT RANGE | 73° (-6° to 67°) | 73° (-6° to 67°) |
| MAXIMUM TRIM RANGE | 20° (-6° to 14°) | 20° (-6° to 14°) |
| TROLL CONTROL | 600-1200 RPM | 600-1200 RPM |
| GEARCASE | 5.44″ H.D. | Sport Master |
| GEAR RATIO | 1.60:1 | 1.60:1 |
| CAMBERED SKEG | Available on JPO Models | Available |
| GEAR SHIFT | F-N-R | F-N-R |
| DRY WEIGHT (KG)1,2 | – | – |
| L – 20″ | 313 | 318 |
| XL – 25″ | 318 | 324 |
| XXL – 30″ | 324 | 329 |
| STEERING ANGLE | +/- 30 degreses | +/- 30 degreses |
| STEERING | Electro-Hydraulic Power Steering with Integral Steering Cylinder | Electro-Hydraulic Power Steering with Integral Steering Cylinder |
| MOUNTING CENTERS | 26″ | 26″ |
| CARB STAR RATING3 | 3-Star | 3-Star |
| COLORS | Phantom Black or Cold Fusion White | Phantom Black or Cold Fusion White |
| WARRANTY | 3-Year Limited | 3-Year Limited |
1. Dry weight refers to base engine without liquids, battery cables, throttle/shift cables, bolt-on steering components, mounting hardware, or propeller/hub kits.
2. Add 5.90 kilograms for rear tie-bar models.
3. Worldwide emissions calibration certification.
