Description

Delivery

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Extreme ? Go beyond the next level.

The muscular new shape and dynamic look of the XTO 425hp V8 immediately communicate its incredible industry-first concepts and technologies waiting to be unleashed.

The first direct injection 4-stroke. The first with integral electronic steering, linking seamlessly to Yamaha’s Helm Master? system. The first to achieve a new level of reverse thrust, torque, and speed. It’s a genuine performance revolution for larger boats and an incredible story. Achieve the ultimate. Discover Extreme.

At a glance

• Extreme Power – 5.6 L ? 32-v ? 60? V8 ? DOHC ??VCT
• Efficiency – first-ever Direct Injection 4-stroke
• Precision – built-in electric steer-by-wire system
• Ultimate control – unique all-electronic systems
• 300% more reverse thrust from new exhaust system
• Reliability – tough custom-engineered crankshaft
• Dependability – new heavy duty gear system
• New sleek lower unit design with massive gearcase
• Dual chamber oil pump to handle extreme demands
• Ultra-convenient in-water gear oil change facility
• High Output charging – for more output at low rpm
• Ideal for heavy boats and RIBs – XTO OS propellers

Technical Information

Engine type

4-stroke

Displacement

5559 cc

No. of cylinders/configuration

60?-V8, 32-valve, DOHC with VCT

Bore x stroke

96.0 x 96.0

Prop shaft output at mid range

316.9kW / 5,500 rpm

Full throttle operating range

5,000-6,000 rpm

Lubrication system

Direct Fuel Injection

Ignition / advance system

TCI

Starter system

Electric

Gear ratio

1.79 (25:14)

Recommended boat transom height

X:640mm U:767mm E:894mm

Oil pan capacity

7.8 litres

Weight without propeller

442 ? 463 kg