Yamaha LXF450USA4 Outboard Motor

30-Inch Shaft | 5.6-Liter V8 | Digital Electronic Control | EFI | Electric Start | Power Trim & Tilt | Classic White | Counter Rotation

The Yamaha LXF450USA4 is the 30-inch-shaft, Classic White counter-rotating version of Yamaha’s most powerful offshore outboard. Built around a 5.6-liter V8, it pushes out 450 horsepower with the control and balance serious offshore boaters expect. The longer shaft suits deep-V hulls and high-transom rigs, while the counter-rotation gearcase keeps steering light and tracking straight when paired with standard-rotation engines.

This motor isn’t just about muscle—it’s made to look the part. The Classic White finish gives larger fishing boats and luxury center consoles a clean, refined look that pairs nicely with Yamaha’s modern offshore styling.

⚠️ Important Installation Info

This is a Digital Electronic Control (DEC) engine and must be installed by an authorized Yamaha dealer. Both the outboard and control system require diagnostic flashing and setup using Yamaha tools. DIY installation isn’t supported.

Key Features

• 5.6-Liter V8 Power – Yamaha’s strongest four-stroke, producing 450 HP for serious offshore performance.
• 30-Inch Shaft – Extended length for deeper transoms and improved propeller placement in rough seas.
• Counter-Rotation Design – Balances torque and eases helm effort in twin-, triple-, or quad-engine rigs.
• Classic White Finish – Premium marine coating that offers corrosion resistance and timeless good looks.
• Digital Electronic Control (DEC) – Cable-free throttle and shift for smooth, accurate response.
• Electronic Fuel Injection (EFI) – Precise fuel delivery for reliable starts, strong acceleration, and efficiency.
• Electric Start + Power Trim & Tilt – Quick ignition and fingertip angle control for performance or shallow-water operation.
• RPM Range – 5000 to 6000 – Tuned for powerful acceleration and efficient cruising.
• Displacement – 5.6 L (5559 cc) – Yamaha’s most advanced offshore V8 platform.
• 96-Amp Alternator – High output keeps electronics, pumps, and lighting powered all day.
• Corrosion Protection System – YDC-30 alloy, multi-layer coatings, and a freshwater flush for long-term durability.
• Noise & Vibration Control – Tuned intake and exhaust reduce vibration and cabin noise.
• Approx. Weight – 999 lbs – Heavy-duty build engineered for stability offshore.

The LXF450USA4 is built for captains who demand balance, precision, and dependable power on blue water. Its counter-rotation setup smooths handling in tough seas, while the Classic White finish adds a clean, upscale look that stands out at the dock or thirty miles offshore.

Frequently Asked Questions

Q: Why choose a counter-rotating outboard?

A: It evens out prop torque, keeps steering lighter, and improves straight-line tracking on multi-engine boats.

Q: Which boats benefit from a 30-inch shaft?

A: Large offshore hulls and deep-V designs that need the propeller deeper in the water for traction in rough conditions.

Q: How tough is the Classic White finish?

A: Yamaha’s Classic White coating is a marine-grade finish built to resist corrosion and maintain its shine in saltwater environments.