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XTO 450hp V8

Key Features

Features Gallery
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    Exceptional power, torque and control

    Ready for Xtreme Thrust Output? This flagship V8 unit delivers power, performance and precision control. Working hand in glove with our unique Helm Master EX® control system, now with bow thruster compatibility, you will experience a seamlessly integrated total power and control solution for larger offshore boats.

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    5.6 litres of naturally aspirated V8 power

    At the heart of this flagship powerhouse is Yamaha's very latest technology, taken to new levels. With features like five-pump Direct Fuel Injection, Variable Camshaft Timing (VCT), Double Overhead Camshafts (DOHC), dual chamber oil pump, two-stage water pump, quadruple thermostats, our unique in-bank exhaust system.

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    TotalTilt™ function with integrated tilt limit

    Yamaha’s exclusive TotalTilt™ function allows complete tilt up or down (until trim ram contacts) from any position with a simple double-push of the respective tilt button. During the process, a buzzer sounds to alert crew to keep clear of the outboard, and the integrated tilt limiter can be customised to suit any boat.

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    Ultimate efficiency from Direct Injection

    Yamaha is dedicated to delivering ever-greater efficiency and economy and the fuel system on the XTO is a perfect example of this in action. From the first-ever Direct Injection four-stroke engine in its class to the thrust-enhancing exhaust system.

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    Integrated Digital Electric Steering

    This highly efficient built-in steering system delivers a smoother and more intuitive experience when at the helm, it is lighter and less complex than a separate hydraulic system plus is cleaner to fit and operate, and far quicker and simpler to rig.

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    Thrust-enhancing exhaust system.

    This system expels the exhaust via a combination of three different routes, depending on the rpm level. The result is around 300% more reverse thrust, better balance between forward and reverse thrust when manoeuvring with Helm Master EX®, and greater efficiency at full power.

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    Easy to maintain

    An in-water gear oil change with the boat still at the dock simplifies this process and a multi-part cowling with quick-access locks allows secure, easy access for maintenance and adjustments.

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    Tougher tech.

    Every bit of the XTO offers superior build quality. The massive crankshaft, the torque-absorbing heavy-duty gears, the extra-large diameter prop shaft, and the completely new gearcase design, with its low friction co-efficient and better cooling, all contribute to reliable performance.

Technical Specifications

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  • Engine
    Engine type
    4-stroke, DOHC, V8
    Displacement
    5,559 cc
    No. of cylinders/configuration
    V8
    Bore x stroke
    96.0 x 96.0
    Prop shaft output at mid range
    450 hp @ 6,000 rpm
    Full throttle operating range
    5,000 - 6,000 rpm
    Lubrication system
    Wet sump
    Fuel Induction System
    Direct Injection
    Ignition / advance system
    Electronic ignition (TCI)
    Starter system
    Electronic ignition (TCI)
    Gear ratio
    25/14 1.79
  • Dimensions
    Oil pan capacity
    7.8 l
    Weight without propeller
    437 kg - 458 kg