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Yamaha XF425ESB2 425HP Outboards

V8 5.6L 425hp

The 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 the highest compression ratio on the water, 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.

• Available in signature Yamaha gray or new pearlescent white
• 425 hp on less-expensive 89-octane gasoline
• Available with Helm Master with SetPoint
• Impressive 5-year Limited Warranty, for pleasure use

Yamaha XF425ESB2 425HP Outboards

425 hp XTO Offshore Specifications

Engine Type V8 / DOHC / 32 valves / 4 Valves per Cylinder
Displacement 5.6-Liter
Bore x Stroke 96 x 96 mm (3.78 x 3.78 in)
Prop Shaft Horsepower 425 hp at 5500 RPM
Full Throttle RPM Range 5000 – 6000 RPM
Alternator Output at W.O.T. 100 Amp Gross, Max
Compression Ratio 12.2:1
Fuel Induction Direct Injection / Up to 2900 PSI
Starting System Electric
Recommended Fuel Octane 89
Recommended Engine Oil Yamalube 4M (See owner’s manual)
Recommended Fuel FiltrationYamaha 10-Micron Fuel/Water Separating Filter (external)
C.A.R.B. Rating 3-Star
Exhaust Through Propeller (Except in Reverse Under 2500 RPM)
Intake 32
Ignition TCI Microcomputer
Spark Plug ILMAR7E-9 / Iridium
Alternator Output Up to 96 amps net/ 100 amps gross, max
Starting System Electric w/ PTT
Lubrication Wet Sump
Engine Oil Capacity 7.8L / 8.2 Quarts | 7.5L / 7.9 Quarts
Recommended Cooling Thermostatic Control
Ethanol Blend Limit 10% Maximum
Gear Ratio (25/14) 1.79
Gear Shift Forward, Neutral, Reverse
Shaft Length 25″ – 30″ – 35″
Degree of Tilt -4° through +73°
Degree of Trim -4° through +16°
Dry Weight 25″ shaft / 432 kg (952 lbs) ; 30″ shaft / 443 kg (977 lbs); 35″ shaft / 453 kg (999 lbs)
Mounting Centers 28.5″
Steering Integrated, Electric Actuation
Steering Angle (maximum) 31° from center, either direction
Warranty 5-year Pleasure, 3-year Government, 1-year Commercial

The 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 the highest compression ratio on the water, 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.