Yamaha Gray 425hp 5.6L V8 XTO Offshore Outboard Engine – XF425XSA

The Gray 425hp 5.6L V8 XTO Offshore is the result of years of collaboration with top boat designers and has been built from the ground up to provide the ultimate in power and efficiency offshore. With impressive stats such as a 12.2:1 compression ratio for impressive fuel economy and power, industry firsts such as an electric steering system and engineering touches such as iridium spark plugs and quad thermostats, it’s purpose-built for extreme power, durability, control and reliability.

• Phase Angle Control Charging System an award-winning industry first
• Available in signature Yamaha grey or new pearlescent white
• 425 hp on less-expensive 89-octane gasoline
• Impressive 5-year Limited Warranty, for pleasure, use

Miles from shore. No land in sight. Nothing on your mind but the adventure ahead and the formidable offshore gamefish that await. That’s the beauty of having a reliable Gray 425hp 5.6L V8 XTO Offshore behind you. Purpose-built for the rigours of the offshore, the XTO gives you extreme control, precision and durability—and now up to 450 horses. Go further and with more confidence than ever before—the Yamaha XTO Offshore F450 and F425.

The Gray 425hp 5.6L V8 XTO Offshore’s award-winning Phase Angle Control Charging System creates up to 96 amps of net charging power per outboard at idle. That’s up to 480 with quints. In addition to powering a range of critical onboard tech, it prioritizes charging to the starting batteries, for incredible reliability offshore.

Maximizes power and efficiency by spraying fuel at high pressure directly into the combustion chamber.

A three-stage low-medium-high pressure fuel pump system works, in part, due to two independent, rpm-activated fuel pumps in the Vapor Separator Tank. This unique five-pump system creates an unprecedented fuel injection pressure of up to 2900 PSI to further maximize atomization and efficiency.

Intake tracks enter the cylinder head from the outside of the powerhead. This gives exhaust gases room for a direct route to the lower unit and out through the propeller hub, streamlining the powerhead and improving flow.

With diameters from 16 to 17 1/8 inches, 15 to 27-inch pitches and increased blade surface, XTO propellers complement the torque potential of our V8 XTO Offshore. They also contribute to greater overall thrust.

For the ultimate convenience, a technician can drain and replace your outboard’s lower-unit lubricant without having to remove your boat from the water.

For more control at lower speeds and increased precision of our Helm Master^® EX boat control system, the exhaust is diverted away from the propeller at RPMs below 2,500.

The tilt pump shuts off when it reaches the maximum tilt setting, rather than continuing to run, saving power and reducing noise at full trim in/out.

A unique design offers two methods for flushing the XTO, either through a built-in flushing system hose routed through the rigging tube/grommet or a conventional front-mounted direct-hose hook-up.

For minimized vibration and a more compact design, incredibly strong upper motor mounts placed wide on the exterior of the upper mid-section work in conjunction with our Long Span Mounting System.

The XTO’s Phase Angle Control Charging System meets the extreme electrical needs of today’s larger boats. This Innovation Award-winning system produces up to 96 amps of net charging power at idle—from a single outboard—and up to 480 net amps in a quint configuration. That’s up to 65 per cent more maximum net charge at idle than previous XTO Offshore models.

A redesigned rigging tube provides an extra 3.25 inches of clearance at the motor well when tilted up and is compatible with most flat-transom installations.

The XTO responds quicker to steering inputs because it contains a digital electric steering motor, which directly receives signals from the electric helm to the integrated steering control unit.

Helm Master EX now features more than 10 automated modes, including the new DriftPoint^® Track, which helps to automate the drifting of an uneven shoreline; the new Autopilot with Heading and Course Hold; the expanded ability to control up to five outboards and more.

425 HP