2027 Yamaha Four Stroke Jet Drive F90JB

Meet the 2027 Yamaha Four Stroke Jet Drive F90JB (F90 Jet): a purpose-built, engine-only upgrade for boaters who want the punch and practicality of Yamaha’s fourstroke power paired with jet-drive confidence. Finished in Yamaha Gray, this is a clean, modern look that fits everything from utilitarian river rigs to refined coastal tenders—without screaming for attention.
At the heart of this outboard is a 1.8L in-line 4-cylinder, 4-stroke platform (1832cc) with 16 valves and SOHC breathing. That combination is all about usable torque and smooth power delivery—exactly what you want when you’re pushing typical 25-inch transom, remote-steer hulls that live for quick acceleration, steady cruise, and predictable handling. With 90 bhp (67.2 kW) on tap at 5500 RPM and a wide-open throttle range of 5000–6000 RPM, it’s tuned to run strong where boaters actually use their throttle.
Because it’s fuel injected and designed to run on regular gas, this F90JB keeps the “fun” part of boating from turning into a fuel-bill event—especially at cruise, where efficient fourstroke combustion and smart fueling help you go farther on the same tank. The water (open loop) cooling system is ready for real marine duty, and it’s salt water capable for owners who split their time between bays, inlets, and inland water.
The jet drive adds a different kind of versatility, too—delivering jet pump rated horsepower of 65 bhp (48.5 kW) for jet applications, with power trim to help you dial in attitude and control on changing loads. Remote outboard steering control keeps the helm feel familiar and cleanly integrated, while electric start means quick, no-drama launches.
Yamaha also builds in confidence features for day-to-day ownership: a visual/audible engine alert system plus emergency RPM reduction to help protect the engine if something needs your attention. A 35-amp alternator supports onboard electronics, and at 354 lbs dry (161 kg) on the 25-inch shaft, it’s a solid, well-balanced package for repower projects that want capability without going oversized.
If you’re shopping for a standalone engine that’s efficient, strong, and ready for demanding water, this Yamaha Gray F90JB is a smart way to bring jet-drive performance to your transom. Warranty coverage: ask our team for the current Yamaha warranty details available on this new engine.

Color Options

Pricing

Engine

Drive Line

Steering

Meet the 2027 Yamaha Four Stroke Jet Drive F90JB (F90 Jet): a purpose-built, engine-only upgrade for boaters who want the punch and practicality of Yamaha’s fourstroke power paired with jet-drive confidence. Finished in Yamaha Gray, this is a clean, modern look that fits everything from utilitarian river rigs to refined coastal tenders—without screaming for attention.
At the heart of this outboard is a 1.8L in-line 4-cylinder, 4-stroke platform (1832cc) with 16 valves and SOHC breathing. That combination is all about usable torque and smooth power delivery—exactly what you want when you’re pushing typical 25-inch transom, remote-steer hulls that live for quick acceleration, steady cruise, and predictable handling. With 90 bhp (67.2 kW) on tap at 5500 RPM and a wide-open throttle range of 5000–6000 RPM, it’s tuned to run strong where boaters actually use their throttle.
Because it’s fuel injected and designed to run on regular gas, this F90JB keeps the “fun” part of boating from turning into a fuel-bill event—especially at cruise, where efficient fourstroke combustion and smart fueling help you go farther on the same tank. The water (open loop) cooling system is ready for real marine duty, and it’s salt water capable for owners who split their time between bays, inlets, and inland water.
The jet drive adds a different kind of versatility, too—delivering jet pump rated horsepower of 65 bhp (48.5 kW) for jet applications, with power trim to help you dial in attitude and control on changing loads. Remote outboard steering control keeps the helm feel familiar and cleanly integrated, while electric start means quick, no-drama launches.
Yamaha also builds in confidence features for day-to-day ownership: a visual/audible engine alert system plus emergency RPM reduction to help protect the engine if something needs your attention. A 35-amp alternator supports onboard electronics, and at 354 lbs dry (161 kg) on the 25-inch shaft, it’s a solid, well-balanced package for repower projects that want capability without going oversized.
If you’re shopping for a standalone engine that’s efficient, strong, and ready for demanding water, this Yamaha Gray F90JB is a smart way to bring jet-drive performance to your transom. Warranty coverage: ask our team for the current Yamaha warranty details available on this new engine.

Color Options

Pricing

Engine

Drive Line

Steering