Yamaha 425HP XF425USB XTO – DES V8 30in

Yamaha 425HP XF425USB XTO Offshore V8 30in

The Yamaha 425HP XF425USB XTO Offshore is a robust 5.6L V8 powerhead featuring a 30-inch ultra-long shaft, designed for the tallest transoms found on premium offshore sportfishing vessels. Utilizing a 60-degree block and quad-cam DOHC architecture, this model delivers massive torque density specifically tuned to swing oversized propellers in turbulent water. Its mechanical soul is defined by the integration of Digital Electric Steering (DES), which replaces traditional hydraulic rams with a high-torque electric motor for instantaneous and precise vessel response during high-speed transit.

Achieving peak technical performance, the XF425USB utilizes high-pressure direct injection to refine the combustion process, delivering more torque at the prop shaft than any previous Yamaha four-stroke. The engine is protected by specialized saltwater-grade alloys and multi-layered anti-corrosion treatments to safeguard against galvanic oxidation. Routine maintenance is made effortless by the ability to service gear lubricants without pulling the boat from the water. This model features a high-output 90-amp alternator, providing ample power for modern navigational safety equipment and high-demand onboard electronics.

Key Features of Yamaha XF425USB

• 5559cc 32-Valve 60-Degree V8.
• 425 Horsepower Prop Shaft Rating.
• 30-Inch Shaft 977 lbs Weight.
• Direct Fuel Injection (DFI) System.
• Integrated Digital Electric Steering (DES).
• 90 Amp Total Output Alternator.
• 1.79:1 Ratio Heavy-Duty Gearcase.