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Yamaha LXF425ESB2 425HP – V8 XTO Offshore Counter Rotation 25-Inch
Yamaha LXF425ESB2 – 425HP Counter Rotation utilizes a flagship 5.6L V8 4-cycle marine engine architecture in Pearlescent White, featuring integrated Digital Electric Steering (DES) and a 25-inch shaft. This XTO Offshore® unit incorporates industry-first Direct Injection and a massive 12.2:1 compression ratio, providing the extreme torque and thrust required to propel the largest multi-engine offshore vessels with elite digital precision.
- Precision Shaft Geometry Data: 25-inch extra-long shaft (Counter Rotation).
- Internal Engine Configuration Type: V8 DOHC 32-Valve 5.6L Direct Injection.
- Advanced Fuel Delivery System: Direct Injection (DI) with Digital Electronic Control (DEC).
- Recommended Vessel Application Use: Engineered for premium white-hulled flagship offshore boats.
- Factory Protection Service Plan: 3-year limited factory warranty coverage.
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Description
Yamaha LXF425ESB2 425HP White XTO
The Yamaha LXF425ESB2 425HP outboard motor represents the pinnacle of luxury offshore propulsion, featuring an advanced V8 5.6L 32-valve DOHC engine architecture in a stunning Pearlescent White finish. This high-performance powerhead is a specialized XTO Offshore unit designed for premium multi-engine vessels requiring the absolute maximum in advanced outboard engine technology. Its 25-inch long shaft and counter-rotation gearcase are specifically designed for high-end center consoles requiring neutralized steering torque and a sophisticated aesthetic match.
Operational peak performance of the LXF425ESB2 425HP is sustained across a wide 5000-6000 full-throttle RPM range using Integrated Digital Electric Steering (DES) and Helm Master EX compatibility. The specialized 1.79:1 gear ratio and high-pressure direct injection effectively translate raw V8 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 smooth shifting of digital integration in premium twin or triple-engine setups.
Technical Specifications of Yamaha LXF425ESB2
- Robust V6 5.6L DOHC architecture delivers 425 horsepower with elite direct-injection efficiency.
- Premium White 432 kg design features a 25-inch long shaft for specialized offshore transoms.
- Counter-rotation (left-hand) gearcase design balances steering torque in multi-engine installations.
- Integrated Electric Steering provides effortless vessel handling and precise control at all speeds.
- Digital Electronic Control (DEC) and Helm Master EX compatibility allow for smooth helm management.
- Massive 100-amp alternator output ensures navigation radar and digital sonar units remain fully powered.
- Investment is protected by a 3-year limited factory warranty and Japanese maritime engineering excellence.
White V8 Aesthetic Power
The LXF425ESB2 features a stunning Pearlescent White finish to provide a high-end aesthetic match for luxury center consoles and offshore cruisers. Its robust 32-valve V8 configuration maximizes air intake and displacement 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 with balanced torque and digital precision.
Direct Injection Induction
This 425HP engine incorporates a sophisticated Direct Injection system to spray fuel directly into the combustion chamber at high pressure. This advanced induction maximizes thermal efficiency and throttle response, providing boaters with immediate power when navigating heavy offshore seas. You achieve outstanding power reserves and better fuel economy while exploring remote coastal sections far from local marina fuel docks.
Integrated Electric Steering
The LXF425ESB2 features Integrated Electric Steering to provide a smooth and responsive boating experience without external hydraulic lines or pumps. This digital system provides a clean transom rigging while offering adjustable steering friction and precision for the captain. Professional anglers and luxury cruiser owners can enjoy effortless vessel command during long offshore days without operator fatigue or mechanical lag.
Balanced Counter-Rotation
The LXF425ESB2 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 in following seas.
100-Amp Charging Capacity
The 425HP outboard is equipped with a high-output 100-amp alternator, ensuring that all onboard marine electronics and digital displays remain fully powered. This massive electrical capacity supports gyro stabilizers, multiple fish finders, and navigation radar without the risk of draining the primary starting batteries. US boaters gain the confidence to run a full suite of modern electronics during extended offshore tournament trips.
Maintenance Care Protocol
This Digital V8 engine is built with high-quality sacrificial anodes and a quad-thermostat system to prevent destructive galvanic corrosion daily. Regular maintenance of the gearcase and the TotalTilt system ensures smooth operation in harsh saltwater coastal environments. Pro Tip: Flush the internal cooling passages with fresh water after every launch to maintain cooling system integrity and prevent internal salt accumulation in the massive 5.6L block.
YAMAHA LXF425ESB2 Full Specs
| Engine type | V8 / DOHC / 32 Valves / 4 Valves per Cylinder |
| Displacement | 5.6L |
| Bore x stroke | 96 x 96 mm (3.78 x 3.78 in) |
| Horsepower | 425hp at 5500 RPM |
| Full-throttle rpm range | 5000 - 6000 RPM |
| Compression ratio | 12.2:1 |
| Fuel induction | Direct Injection / Up to 2900 PSI |
| Recommended fuel | Octane 89 |
| Ignition | TCI Microcomputer |
| Alternator output | 100 Amp Gross, Max |
| Gear ratio | 1.79:1 |
| Gear shift | Forward, Neutral, Reverse |
| Shaft length | 25-Inch |
| Dry weight | 432 kg (952 lbs) |
| Controls | Digital Electronic Control (DEC) / Helm Master EX |
| Steering | Integrated, Electric Actuation |
| Trim and tilt | Power Trim & Tilt w/ TotalTilt |
| Exhaust | Through Propeller (Except in Reverse Under 2500 RPM) |
| Cooling system | Water, Thermostatic Control (Quad Thermostats) |
| Lubrication | Wet Sump |
| Oil capacity | 7.8L (8.2 Quarts) with filter |
| Emissions rating | C.A.R.B. 3-Star |
Yamaha LXF425ESB2 425HP Counter Rotation Technical Guide
The 5.6L V8 XTO Offshore consumes approximately 37.5 gallons per hour at wide open throttle. Tracking your gallons per hour rate at 3500-4000 RPM cruise is vital for managing the fuel requirements of this 25-inch counter-rotation model in multi-engine setups.
This model features Yamaha’s Phaze Five paint process and an integrated freshwater flushing system. Regularly inspect all sacrificial aluminum anode locations on the bracket and the massive 25-inch gearcase to prevent galvanic corrosion in saltwater.
The 5.6L V8 engine has a significant oil capacity of 8.2 US quarts with a filter change. Adhering to the FC-W engine oil capacity is critical for the DOHC 32-valve system and the high-performance direct-injection components.
The XTO features a 90-amp alternator designed to support integrated electric steering. A battery bank with a minimum marine cranking amps rating of 1000 MCA is required to handle the high-pressure fuel pumps and starting demands.
This model utilizes XTO OS Series propellers; for counter-rotation units, the pitch must be matched to the lead engine to achieve the 5000-6000 RPM wide open throttle window for peak performance.
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