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Yamaha LF300XCB2 300HP – Counter Rotation Digital Control 25-Inch
Yamaha LF300XCB2 – 300HP Counter Rotation features a refined clean-running boat motor design in Pearlescent White, equipped with a 25-inch shaft and digital fly-by-wire controls for multi-engine platforms. This unit incorporates a high-output 50-amp alternator and VCT technology, providing the ultimate combination of aesthetic luxury and electrical power for complex modern sonar and radar arrays.
- Transom Shaft Length Specification: 25-inch extra-long shaft (Counter Rotation).
- Core Engine Mechanical Design: V6 60-Degree DOHC 24-Valve 4.2L.
- High Precision Fuel Induction: Digital Electronic Control (DEC) with VCT.
- Optimal Marine Vessel Compatibility: Perfect for premium white-hulled offshore vessels.
- Long Term Warranty Coverage: 3-year limited factory warranty coverage.
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Description
Yamaha LF300XCB2 300HP White DEC
The Yamaha LF300XCB2 300HP outboard motor represents the pinnacle of luxury offshore propulsion, featuring an advanced V6 4.2L 24-valve DOHC engine architecture in a stunning Pearlescent White finish. This high-performance powerhead maintains a dry weight of 562 lbs to ensure an elite power-to-weight ratio for premium multi-engine vessels requiring balanced thrust. Its 25-inch long shaft and counter-rotation gearcase are specifically designed for advanced outboard engine technology for consistent propeller immersion and stable hydrodynamic thrust during oceanic transits.
Operational peak performance of the LF300XCB2 300HP is sustained across a wide 5000-6000 full-throttle RPM range using Digital Electronic Control (DEC) and a Precision Multi-Point EFI system. The specialized 1.75:1 gear ratio effectively translates engine energy into massive torque for rapid hull planing without hesitation. US offshore boaters consistently depend on this Japanese-engineered platform for its ultimate reliability and the sleek aesthetic of a white offshore power plant.
Technical Specifications of Yamaha LF300XCB2
- Robust V6 4.2L DOHC architecture delivers 300 horsepower with elite volumetric efficiency.
- Premium White 255 kg design features a 25-inch long shaft for specialized offshore boat transoms.
- Counter-rotation (left-hand) gearcase design balances steering torque in twin-engine installations.
- Digital Electronic Control (DEC) provides smooth shifting and precise throttle management for luxury helms.
- Precision Multi-Point EFI ensures consistent combustion across the 5000 to 6000 RPM power band.
- High-output alternator (50-70 Amps) ensures navigation displays and digital sonar systems remain fully powered.
- Investment is protected by a limited 3-year factory warranty and Japanese maritime engineering standards.
White V6 Performance Excellence
The LF300XCB2 features a stunning Pearlescent White finish to provide a high-end aesthetic match for luxury center consoles and high-performance hulls. Its robust 24-valve V6 configuration maximizes air intake to ensure rapid and responsive hole-shot acceleration under various loads. Luxury boat owners experience smooth power delivery and reduced vibration when cruising through technical coastal waterways at high speed with digital precision and balanced torque.
Precision Digital Interface
The LF300XCB2 utilizes Digital Electronic Control (DEC) to provide a smooth and cable-free throttle and shifting experience at the helm. This system is fully compatible with modern offshore rigging for advanced vessel positioning and synchronization in multi-engine setups. Captains gain effortless control of multiple engine configurations for a complete and modern helm solution on luxury offshore vessels.
DOHC 24-Valve Architecture
This 300HP engine features a Double Overhead Cam (DOHC) design with four valves per cylinder to maximize air intake and exhaust efficiency. This mechanical design ensures a wider power band and higher torque output, allowing the engine to react instantly to throttle changes. You gain the refined performance needed for high-speed coastal cruising and technical maneuvering in heavy offshore conditions.
Balanced Counter-Rotation
The LF300XCB2 features a specialized counter-rotation gearcase that spins the propeller in a left-hand direction to neutralize torque pull. When paired with a standard rotation motor, this configuration ensures the vessel tracks straight and true with minimal steering effort from the captain. Boaters experience significantly improved stability and reduced operator fatigue during long oceanic crossings.
Offshore Power Delivery
The specialized 1.75:1 gear ratio provides the mechanical leverage needed to push heavy displacement hulls and maintain planing speeds in rough water. This calibration ensures the motor can effectively handle the weight of large offshore tenders and performance center consoles. Owners benefit from consistent acceleration and the power required to navigate through challenging coastal inlets with full confidence.
Routine Maintenance Protocol
This Digital V6 engine is built with high-quality sacrificial anodes to prevent destructive galvanic corrosion daily in saltwater coastal environments. Regular maintenance of the power trim and tilt system and cooling passages ensures smooth engine operation in harsh saltwater conditions. Pro Tip: Flush the engine with fresh water after every launch to maintain cooling system integrity and protect internal components from salt buildup.
YAMAHA LF300XCB2 Full Specs
| Engine type | V6 / DOHC / 24 valves |
| Displacement | 4.2L |
| Bore x stroke | 96 x 96 mm (3.78 x 3.78 in) |
| Horsepower | 300hp at 5500 RPM |
| Full-throttle rpm range | 5000 - 6000 RPM |
| Compression ratio | 10.3:1 |
| Fuel induction | Multi-Point Electronic Fuel Injection |
| Recommended fuel | Octane 89 |
| Ignition | TCI Microcomputer |
| Alternator output | 50 - 70 Amp |
| Gear ratio | 1.75:1 |
| Gear shift | Forward, Neutral, Reverse (Counter Rotation) |
| Shaft length | 25 inch |
| Dry weight | 562 lbs (255 kg) |
| Controls | Digital Electronic Control (DEC) |
| Steering | Remote (Compatible with DES/Hydraulic) |
| Trim and tilt | Power Trim & Tilt |
| Exhaust | Through Propeller |
| Cooling system | Water, Thermostatic Control |
| Lubrication | Wet Sump |
| Oil capacity | 6.3L (6.7 Quarts) with filter |
| Emissions rating | C.A.R.B. 3-Star |
Yamaha LF300XCB2 300HP Counter Rotation Technical Guide
The 4.2L V6 Offshore consumes approximately 26.2 gallons per hour at wide open throttle. Monitoring your gallons per hour rate at cruising speed is essential for long-range offshore planning with this 25-inch shaft counter-rotation model.
This model uses high-grade aluminum alloys and Yamaha’s multi-stage coating. Maintain the sacrificial aluminum anode locations and use the integrated flushing port to protect the 25-inch gearcase and powerhead from internal saltwater deposits.
The V6 powerhead requires 6.7 US quarts of oil with filter replacement. Maintaining the FC-W engine oil capacity is vital for the 4.2L engine’s longevity, especially under the high-torque demands of offshore operation.
Equipped with a 70-amp alternator, this motor provides ample power for DEC electronics. You must use a battery with a minimum marine cranking amps rating of 875 MCA to ensure reliable starting and operation of the digital systems.
The unit performs optimally with Saltwater Series II stainless steel propellers selected to keep the engine within the 5000-6000 RPM range at wide open throttle for maximum efficiency.







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