2026 Yamaha Outboards XTO Offshore 450 hp 25 in

XTO OFFSHORE
Digital: 450 hp, 425 hp

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 Yamaha 5.6L V8 XTO Offshore® behind you. Purpose-built for the rigors 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.

450 HP
The XTO Offshore® 450 packs everything boaters love about the original XTO outboard—the durability, power and reliability—plus extra horses. With impressive stats such as 12.3:1 compression ratio for outstanding fuel economy and power and industry-first features such as an integrated electric steering system and Phase Angle Control Charging, it’s purpose-built for the extremes of going offshore.

• Award-winning Phase Angle Control Charging System
• Available in signature Yamaha gray or new pearlescent white
• 450 hp on less-expensive 89-octane gasoline
• Impressive 5-year Limited Warranty, for pleasure use

Features may include:

DIRECT-INJECTION FOUR STROKE

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

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.

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 (SDS) PROPELLERS

• 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.

IN-WATER GEAR LUBE CHANGE SYSTEM

• 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.

THRUST-ENHANCING REVERSE EXHAUST

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

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.

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.

WIDE-SPAN 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.

PHASE ANGLE CONTROL CHARGING

• 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 percent more maximum net charge at idle than previous XTO Offshore models.

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.

RELIABILITY & DURABILITY

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