Mercury 450 HP 4 Stroke

We know what moves you. Freedom. Wide-open throttles in wide-open spaces. This is the outboard you’ve been waiting for. Meet the supercharged Mercury Racing 450R.


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Rated Horsepower: 450
kW: 336

Idle RPM: 600
Max RPM at Full Throttle: 5800-6400
Cylinders/Engine Configuration: V8 [64 degree] with 32-valve Dual Overhead Cam [DOHC]
Displacement (Cubic Inch, CID) / (Liters, L): 279 CID / 4.6L
Bore & Stroke (in.) / (mm): 3.6 in x 3.4 in / 92 mm x 86 mm

Induction System: 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

Fuel System: Electronic Fuel Injection (EFI) Computer Controlled
Fuel Requirements: Unleaded Regular 89 Octane Minimum (R+M/2) or 95 RON 10% Ethanol Maximum
Ignition System: SmartCraft PCM 112 Digital Inductive
Charging System: 115-amp (1449 Watt)
Starting: SmartStart Electric

Exhaust System: Selectable

Cooling System: Water-cooled with thermostat control

Lubrication System: Integrated wet sump with oil cooler

Oil Requirements: NMMA Certified FCW SAE 25W-50
Oil Capacity (qts) / (L): 7.0 Quarts / 6.6 Liters
Engine Management System: SmartCraft PCM 112

Throttle and Shift Controls: Digital Throttle & Shift
Engine Protection System: SmartCraft Engine Guardian

Trim/Tilt System: Power trim and tilt
Maximum Tilt Range: 73° (-6° to 67°)
Maximum Trim Range: 20° (-6° to 14°)
Troll Control: 600-1200 RPM
Gearcase 450R: 5.44” HD

Gear Ratio: 1.60:1
Cambered Skeg: Available

Gear Shift: F-N-R
Dry Weight (lbs./kg): L – 20″: 689/313 (450R)

Steering Angle: +/- 30 degrees
Steering: Electro-Hydraulic Power Steering with Integral Steering Cylinder

Mounting Centers: 26”

CARB Star Rating: 3-Star

Colors: Phantom Black or Cold Fusion White

Warranty: 3-Year Limited


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