Introducing the XTO Offshore™

This 5.6L V8 is more than an outboard. It's an integrated power system.

Expected Delivery Date Summer 2018
XTO

Welcome to the new class of extreme offshore power.

The Yamaha V8 XTO Offshore™ is smarter, more powerful and more efficient than anything you’ve seen offshore. With groundbreaking design that allows for dockside serviceability and industry-first technology such as an electric steering system, it’s keeping yacht-class craft in the water, and moving them more reliably and efficiently than ever before. Scroll to see the tech.

XTO

Industry's First Direct-Fuel-Injection Four Stroke

Maximizes power and efficiency by spraying fuel at high pressure directly into the combustion chamber. It's the first four-stroke powerhead in the outboard industry to feature direct injection.

XTO

Exclusive Fuel System

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.

XTO

In-Bank Exhaust

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.

XTO

XTO Propellers

With diameters from 16 to 17 1/8 inches and increased blade surface, XTO propellers complement the torque potential of our V8 XTO Offshore. They also contribute to greater thrust overall, including up to 300 percent more reverse thrust than the Yamaha F350.

XTO

Endurance-Driven Camshaft

The XTO features dual overhead camshafts that are each connected via a self-tensioning chain immersed in an oil bath and utilize one-sprocket belt engagement. This ensures quiet, precise valve-timing, compact design, low maintenance and long life.

XTO

Carbon-coated Lifters

A special carbon coating on shimless, bucket-style valve lifters increases durability and requires less maintenance.

XTO

Dual Chamber Oil Pump

The XTO's dual chamber oil pump ensures the proper flow and delivery at every engine speed.

XTO

Two-Stage Water Pump

This unique design ensures proper cooling water flow at all RPMs and improved temperature control. It features a massive rubber water impeller for high pressure and flow, and a steel impeller that helps provide sufficient water volume, even under the most extreme offshore conditions.

XTO

Plasma-Fused Sleeveless Cylinders

A micro-textured, plasma-fused design increases fuel economy and is lighter, more compact and 60 percent harder than steel. This allows us to enlarge cylinder bores and increase displacement without increasing the size of the powerhead, all while dramatically reducing friction.

XTO

In-Water Gear Lube Change System

For the first time ever, your technician can drain and replace your outboard's lower unit lubricant without having to remove the boat from the water. Here's to convenience and having more uninterrupted hours on the water.

XTO

Thrust-Enhancing Exhaust Routing

Diverts engine exhaust away from the propeller at RPM below approximately 2,500, for maximum control at lower speed and increased precision of our Helm Master fully integrated boat control system.

XTO

Pump Stop Power Tilt Limit

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

XTO

Dual Flush System

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 through conventional front-mounted direct-hose hook-up.

XTO

Wide-Span Powerhead Mounting System

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.

XTO

High Output Alternator

The XTO's alternator delivers 90-plus amps of total available power, with up to 58 amps at trolling rpm and up to 72 amps net charging at around 1500 rpm, where it's needed most.

XTO

Improved Rigging Tube

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.

  • Intro
  • First Direct-Injection Four Stroke
  • Exclusive Fuel System
  • In-Bank Exhaust
  • XTO (SDS) Propellers
  • Endurance-Driven Camshafts
  • Carbon-Coated Lifters
  • Dual-Chamber Oil Pump
  • Two-Stage Water Pump
  • Plasma-Fused Sleeveless Cylinders
  • In-Water Gear Lube Change System
  • Thrust-Enhancing Exhaust Routing
  • Pump Stop Power Tilt Limit
  • Dual Flush System
  • Wide-Span Powerhead Mounting System
  • High Output Alternator
  • Improved Rigging Tube

Power & Performance

Reliability & Durability

Convenience & Control

System Integration

Electric Steering

Electric Steering


The V8 XTO Offshore features an electric steering system—an industry first. An electric motor directly moves and secures the outboard, rather than using typical electro-hydraulics. This delivers responsive, precise, leak-free steering, while consuming less power, streamlining rigging and reducing maintenance.  

Integral Electronic Steering Control Unit

Integral Electronic Steering Control Unit


The V8 XTO Offshore sends signals from the helm via its steering cylinder position sensor to its integral electronic steering control unit. Integrated functions include joystick calibration, lever sensor, toe-in/out adjustment, joystick thrust, lock to lock and steering friction adjustment.

Helm Master® SetPoint™ Upgrade

Helm Master® SetPoint™ Upgrade


The Helm Master SetPoint suite of functions features intelligent new upgrades for improved functionality, precision and control—from marina to open water.   This includes the ability to precisely adjust your heading and position while remaining in StayPoint™, FishPoint™ or DriftPoint™ modes, and a new Pattern Shift function for trolling below standard in-gear troll speeds—as low as 0.5 mph in calm water.

CL7 Touchscreen Display

CL7 Touchscreen Display


Yamaha’s CL7 7-inch touchscreen display is our most streamlined instrumentation and is compatible with the new V8 XTO Offshore. The CL7 allows you to monitor vital boat functions and the performance of up to four outboards through one gauge. You can also access Helm Master and its upgraded SetPoint suite of precision boat control functions, and have the option built-in freshwater and saltwater maps.

Videos

 
V1: Introduction to XTO Offshore
V2: Take it to the Extreme

Meet the Line-Up

XF425

V8 5.6L 425 hp

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

Specs & Compare

Engine Comparison
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)
Prop Shaft Horsepower 425hp at 5500 RPM
Full Throttle RPM Range 5000 - 6000 RPM
Alternator Output at W.O.T. 90 Amp Gross, Max
Compression Ratio 12.2:1
Fuel Induction System Direct Injection / Up to 2900 PSI
Weight* 432 kg (952 lbs) / 443 kg (977 lbs) / 453 kg (999 lbs)
Recommended Fuel Octane 89
Recommended Engine Oil Yamalube® 4M (See owner's manual)
Recommended Fuel Filtration Yamaha 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 90 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 Limited 5-Year Pleasure, 3-Year Government, 1-Year Commercial

*Weight refers to shortest shaft length, and is measured without motor oil, gearcase oil and propeller (except models 25 hp and under, which include a standard propeller). All Jet model weights include the jet pump assembly (weight estimated).

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