$11,040.00
90 HP, 1,832cc 4-cylinder DOHC
25″ extra-long shaft, remote mechanical
EFI, Variable Trolling RPM Switch (VTS®)
Power trim/tilt, 35-amp charging
The Yamaha F90XB2 is a high-performance four-stroke outboard motor designed for medium-sized boats, such as pontoons, center consoles, bay boats, and aluminum fishing boats up to 16-20 feet. Featuring a 25-inch extra-long shaft, it weighs 367 lbs and is powered by a 1,832cc (111.8 cubic inch) four-cylinder DOHC engine with 16 valves, delivering 90 HP at 5,500 RPM (5,000-6,000 RPM range). Equipped with remote mechanical steering, electric start, and power trim/tilt, it offers precise control and smooth operation. The motor features Precision Multi-Point Electronic Fuel Injection (EFI) for optimal performance and fuel efficiency, and a Variable Trolling RPM Switch (VTS®) for adjustable trolling speeds (650-900 RPM in 50-RPM increments). Built for durability in freshwater and saltwater, it incorporates Yamaha’s YDC-30 alloy, Phaze Five™ five-layer paint system, stainless steel components, and a freshwater flush device for corrosion resistance. Available in Pearlescent White or Yamaha Gray for a sleek, customizable look.
| Engine | 4-stroke, DOHC | 4-cylinder, 16-valve | 1,832cc / 111.8 cu in | 90 HP @ 5500 RPM | EFI | TCI ignition | Water-cooled |
| Shaft | 25″ extra-long | Corrosion-resistant | Aluminum prop | Power trim/tilt | Standard rotation | Salt/freshwater rated | 2.15:1 gear ratio |
| Controls | Remote mechanical | Electric start | VTS® trolling | Engine alert system | Y-COP® compatible | Digital gauges | 35° steering angle |
| Charging | 35 amps | Low-speed charging | Regulated charging | Supports electronics | Battery cable | Maintenance-free | Rectifier regulator |
| Weight | 367 lbs / 167 kg | Balanced design | Minimal drag | Transom mount | Light for class | 26″ mount centers | Heavy-duty mount |
| Performance | 5000-6000 RPM range | Fuel-efficient | Low emissions | High torque | Quick acceleration | Quiet operation | Top speed ~30-40 mph |
| Compatibility | 16-20 ft boats | Pontoons, center consoles | Bay boats, aluminum | 6-25 gal tanks | Digital network | Salt/freshwater rated | Remote steer boats |
| Dimensions | 25″ shaft length | 22.2″ W | 63.4″ H | 33.7″ L | Corrosion-resistant | Transom mount | 70° tilt range |
| Engine | 4-stroke, DOHC | 4-cylinder, 16-valve | 1,832cc / 111.8 cu in | 90 HP @ 5500 RPM | EFI | TCI ignition | Water-cooled |
| Shaft | 25″ extra-long | Corrosion-resistant | Aluminum prop | Power trim/tilt | Standard rotation | Salt/freshwater rated | 2.15:1 gear ratio |
| Controls | Remote mechanical | Electric start | VTS® trolling | Engine alert system | Y-COP® compatible | Digital gauges | 35° steering angle |
| Charging | 35 amps | Low-speed charging | Regulated charging | Supports electronics | Battery cable | Maintenance-free | Rectifier regulator |
| Weight | 367 lbs / 167 kg | Balanced design | Minimal drag | Transom mount | Light for class | 26″ mount centers | Heavy-duty mount |
| Performance | 5000-6000 RPM range | Fuel-efficient | Low emissions | High torque | Quick acceleration | Quiet operation | Top speed ~30-40 mph |
| Compatibility | 16-20 ft boats | Pontoons, center consoles | Bay boats, aluminum | 6-25 gal tanks | Digital network | Salt/freshwater rated | Remote steer boats |
| Dimensions | 25″ shaft length | 22.2″ W | 63.4″ H | 33.7″ L | Corrosion-resistant | Transom mount | 70° tilt range |
High-Performance Engine: 1,832cc four-cylinder DOHC engine with 16 valves and EFI delivers strong torque, quick acceleration, and a favorable power-to-weight ratio for mid-sized boats.
Fuel Efficiency: Precision Multi-Point EFI optimizes fuel delivery for up to 20% better fuel economy at cruising speeds, using 87-octane fuel with a 10% ethanol limit.
Precision Control: Remote mechanical steering and VTS® enable precise trolling speed adjustments from 650-900 RPM in 50-RPM increments, ideal for anglers, with digital gauges for monitoring.
Corrosion Resistance: YDC-30 alloy, Phaze Five™ five-layer paint system, stainless steel components, and multiple sacrificial anodes ensure durability in harsh marine environments, with a freshwater flush device for easy maintenance.
Quiet Operation: Updated cowling with water-draining intake duct and labyrinth exhaust system reduces noise at low to midrange speeds, enhancing comfort.
High-Output Charging: 35-amp alternator provides ample power for onboard electronics, with reliable low-speed charging for extended outings.
Maintenance-Friendly: Freshwater flush device allows engine flushing without starting, and wet sump lubrication with a compact oil pump ensures reliable operation and easy maintenance.
Versatile Design: Lightweight and compact for its class, with a 26-inch mounting center for easy rigging on various boat types.
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Order Processing & Shipping Times
Orders are processed and shipped within 2-5 business days (excluding weekends and holidays). All items are delivered within 10 business days from the date of shipment. As your delivery date nears, the shipper will contact you to coordinate a seamless drop-off.
Before ordering, please verify your shipping address to prevent delays. Your satisfaction is our priority, and we’re committed to making your shopping experience smooth and enjoyable. Have questions? Email us at sales@faa-marine.com—we’re here to help!
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6 reviews for Yamaha 90hp 25″ Shaft | F90XB2
Love the responsiveness on this 90hp. Took it out on Lake Okeechobee, and it accelerated quickly, making fishing spots easier to reach. The price was surprisingly good for a Yamaha — great value for the money.
Using this Yamaha on a 21′ bay boat in Tampa Bay. Powerful motor with good fuel economy. Only minor gripe is the weight — a bit heavier than I expected, but manageable. Overall very pleased.
This engine runs so quietly and smoothly. Took it out on the Chesapeake Bay on my pontoon boat and it handled everything perfectly. Great build quality from Yamaha and a smart purchase at the price point.
Installed this Yamaha on my 18′ aluminum fishing boat in Mobile Bay. The motor starts instantly and runs super smooth. Plenty of power for my boat size, and fuel efficiency is excellent. Definitely worth the price.
Running this on my 20′ center console near Cape Cod. Quiet and reliable engine that handles rough water well. I docked one star only because the cowling can get a bit warm after long runs, but overall a solid motor.