Built for the everyday captain.

The new DF300B is the world’s first 300 HP, four-stroke outboard with dual contra-rotating propellers. The breakthrough combination of the Suzuki Dual Propeller System and the Suzuki 2-Stage Gear Reduction aid to successfully produce better torque, engineered especially for heavy models. DF300B has been engineered to run on 87 octane fuel, perfect for everyday use on larger boats. This truly is Suzuki’s ultimate Four-Stroke Outboard Motor. Now available in Cool White and Pearl Nebular Black.

See Product Brochure here


Giving props where props are due.

The increased power of this engine requires more powerful gears, and more powerful gears take up more space. How do you design a solution that doesn’t compromise performance? Enter our contra-rotating dual propeller system. The contra-rotating propeller provides more “grip” underwater, and because contra-rotating propellers distribute the engine torque evenly over two propellers, the torque per propeller decreases and we can reduce the gear size and design a smaller, more hydrodynamic gear case.

Onboard with offset drive shafts.

By positioning the crankshaft in front of the drive shaft, we’ve moved the outboard’s center of gravity forward, making the outboard more compact and increasing its performance. This design also significantly reduces vibration by moving the engine’s axis of inertia—the point where engine vibrations are at a minimum—up over the upper engine mount.

Control you can trust.

Our technologically advanced Precision Control System is a computer-based drive-by-wire control system that eliminates the friction and resistance of mechanical control cables. Operation is smooth and precise with crisp, immediate shifting that is most evident in the low rpm range, when maneuvering around the marina and in close quarters.

Knock it out of the park.

The knock sensor monitors combustion to provide you with optimized performance. In addition to maximizing power output, the system also helps increase engine durability.


Body Color
Pearl Nebular Black or Cool White
Recommended Transom Height (inches)
X: 25 XX: 30 With Suzuki Contra Rotating Propellors
Starting System
Electric - Suzuki Start System
Weight LBS
X 727, XX 747
Engine Type
DOHC 24-Valve
Fuel Delivery System
Multi Point Sequential Electronic Fuel Dual Injection with Lean Burn and Oxygen Sensor
No. Of Cylinders
V6 (55°)
Piston Displacement inches (cc)
267.9 (4390)
Bore X Stroke Inches (mm)
3.74 x 3.82 (98 x 97)
Maximum Output HP
Operating Range (RPM)
5500 - 6100
Troll Mode
Optional Troll Mode - See Dealer
Oil Pan Capacity quarts (liter)
8.5 (8.0)
Ignition System
Solid State Direct Ignition
12V 54A
Trim Position
Power Trim and Tilt
Gear Ratio
Standard Propellers
Conta Rotating Propellors - See Dealer for options
Propeller Selection

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