2025 Harley-Davidson Fat Boy

The All New 2025 Harley-Davidson Fat Boy

The 2025 Harley-Davidson Fat Boy combines bold design, advanced performance, and classic Harley style. With a powerful Milwaukee-Eight® 117 engine, improved suspension, and high-performance Michelin® Scorcher® 11 tires, it delivers strength and stability on every ride. Its refreshed design includes dual-bending valve forks for smooth handling and a striking 7.0-inch LED headlamp, along with two-tone trajectory paint in Vivid Black and Whiskey Fire. Chrome accents and the signature steamroller stance give it an unmistakable presence on the road. Whether you’re an experienced rider or upgrading, the Fat Boy® Cruiser ensures every journey is unforgettable.

The All New 2025 Harley-Davidson Fat Boy

The 2025 Harley-Davidson Fat Boy combines bold design, advanced performance, and classic Harley style. With a powerful Milwaukee-Eight® 117 engine, improved suspension, and high-performance Michelin® Scorcher® 11 tires, it delivers strength and stability on every ride. Its refreshed design includes dual-bending valve forks for smooth handling and a striking 7.0-inch LED headlamp, along with two-tone trajectory paint in Vivid Black and Whiskey Fire. Chrome accents and the signature steamroller stance give it an unmistakable presence on the road. Whether you’re an experienced rider or upgrading, the Fat Boy® Cruiser ensures every journey is unforgettable.

DESIGN

PAINT

Harley-Davidson’s 2025 Fat Boy boasts some of the best factory paint in the world, ensuring a deep, rich finish that enhances its signature muscular stance. The classic rounded gas tank is flawlessly coated, reflecting both the heritage and modern craftsmanship behind this legendary cruiser. A brand-new, bold tank medallion adds a fresh touch of style, standing out against the vibrant paint with a look that commands attention. Every detail, from the smooth finish to the precise application, speaks to the quality and pride that Harley-Davidson puts into its designs.

Close-up of the fuel tank and engine on the 2025 Harley-Davidson Fat Boy, featuring a blue paint finish and winged logo.

WHEELS

The 2025 Fat Boy rolls on bold 18-inch machined Lakester wheels, giving it a rugged yet refined look that perfectly complements its muscular build. Wrapped in massive tires, these wheels provide not only a smooth, confident ride but also an unmistakable presence on the road. Cutback fenders partially expose the striking wheel design, adding to the bike’s aggressive stance while maintaining a classic cruiser aesthetic. Every detail of the Fat Boy’s wheels is designed to enhance both performance and style, making a powerful statement wherever it goes.

Close-up of the front wheel and fork assembly on the 2025 Harley-Davidson Fat Boy, featuring a distinctive solid disc wheel design.

HEADLAMP NACELLE

The Harley-Davidson Fat Boy features its signature headlamp nacelle, gleaming in bright polished chrome for a bold and timeless look. This iconic design element not only enhances the bike’s muscular front end but also reflects Harley-Davidson’s commitment to premium craftsmanship. Its smooth, contoured shape seamlessly integrates with the front forks, adding to the Fat Boy’s imposing presence on the road. Whether cruising through city streets or open highways, the brilliant chrome finish ensures the bike turns heads wherever it goes.

Front view of the 2025 Harley-Davidson Fat Boy, featuring the round LED headlamp and chrome handlebars.

DESIGN

PAINT

Harley-Davidson’s 2025 Fat Boy boasts some of the best factory paint in the world, ensuring a deep, rich finish that enhances its signature muscular stance. The classic rounded gas tank is flawlessly coated, reflecting both the heritage and modern craftsmanship behind this legendary cruiser. A brand-new, bold tank medallion adds a fresh touch of style, standing out against the vibrant paint with a look that commands attention. Every detail, from the smooth finish to the precise application, speaks to the quality and pride that Harley-Davidson puts into its designs.

Close-up of the fuel tank and engine on the 2025 Harley-Davidson Fat Boy, featuring a blue paint finish and winged logo.

WHEELS

The 2025 Fat Boy rolls on bold 18-inch machined Lakester wheels, giving it a rugged yet refined look that perfectly complements its muscular build. Wrapped in massive tires, these wheels provide not only a smooth, confident ride but also an unmistakable presence on the road. Cutback fenders partially expose the striking wheel design, adding to the bike’s aggressive stance while maintaining a classic cruiser aesthetic. Every detail of the Fat Boy’s wheels is designed to enhance both performance and style, making a powerful statement wherever it goes.

Close-up of the front wheel and fork assembly on the 2025 Harley-Davidson Fat Boy, featuring a distinctive solid disc wheel design.

HEADLAMP NACELLE

The Harley-Davidson Fat Boy features its signature headlamp nacelle, gleaming in bright polished chrome for a bold and timeless look. This iconic design element not only enhances the bike’s muscular front end but also reflects Harley-Davidson’s commitment to premium craftsmanship. Its smooth, contoured shape seamlessly integrates with the front forks, adding to the Fat Boy’s imposing presence on the road. Whether cruising through city streets or open highways, the brilliant chrome finish ensures the bike turns heads wherever it goes.

Front view of the 2025 Harley-Davidson Fat Boy, featuring the round LED headlamp and chrome handlebars.

PERFORMANCE

Close-up of the 117 cubic inch Milwaukee-Eight engine on the 2025 Harley-Davidson Fat Boy, featuring chrome accents and polished exhaust pipes.

MILWAUKEE-EIGHT 117 CUSTOM ENGINE

The Milwaukee-Eight® 117 Custom engine in the 2025 Harley-Davidson Fat Boy is built to deliver the perfect balance of power, performance, and unmistakable Harley sound. This high-performance V-twin provides all the torque you need for effortless highway cruising, making long rides smooth and enjoyable. At the same time, its responsiveness and throttle control make city riding exhilarating, with instant acceleration at your command. Whether you’re rolling down the open road or weaving through urban streets, this engine ensures a ride that feels as powerful as it looks.

Close-up of the rear suspension system on the 2025 Harley-Davidson Fat Boy, visible beneath the seat.

REAR SUSPENSION

The 2025 Fat Boy features an updated monoshock rear suspension that enhances both comfort and control. Designed to smooth out rough roads, it provides a plush ride without sacrificing the bike’s firm, planted feel. Whether cruising on the highway or taking on twisty backroads, the suspension remains composed, ensuring confidence in every turn. This refined setup allows riders to enjoy long-distance comfort while still delivering the responsiveness needed for a more aggressive riding style.

Close-up of the chrome exhaust system on the 2025 Harley-Davidson Fat Boy, showcasing the dual exhaust pipes and rear wheel.

TWO-INTO-TWO EXHAUST

The 2025 Harley-Davidson Fat Boy’s signature two-into-two exhaust system has been redesigned to enhance both performance and sound. Engineered for high-flowing efficiency, it maximizes power output while maintaining the bike’s legendary throttle response. The deep, throaty rumble of the V-twin engine is even more pronounced, delivering an unmistakable Harley-Davidson soundtrack that turns heads. This exhaust system not only boosts performance but also adds to the Fat Boy’s bold and muscular aesthetic, reinforcing its commanding road presence.

PERFORMANCE

MILWAUKEE-EIGHT 117 CUSTOM ENGINE

The Milwaukee-Eight® 117 Custom engine in the 2025 Harley-Davidson Fat Boy is built to deliver the perfect balance of power, performance, and unmistakable Harley sound. This high-performance V-twin provides all the torque you need for effortless highway cruising, making long rides smooth and enjoyable. At the same time, its responsiveness and throttle control make city riding exhilarating, with instant acceleration at your command. Whether you’re rolling down the open road or weaving through urban streets, this engine ensures a ride that feels as powerful as it looks.

Close-up of the 117 cubic inch Milwaukee-Eight engine on the 2025 Harley-Davidson Fat Boy, featuring chrome accents and polished exhaust pipes.

REAR SUSPENSION

The 2025 Fat Boy features an updated monoshock rear suspension that enhances both comfort and control. Designed to smooth out rough roads, it provides a plush ride without sacrificing the bike’s firm, planted feel. Whether cruising on the highway or taking on twisty backroads, the suspension remains composed, ensuring confidence in every turn. This refined setup allows riders to enjoy long-distance comfort while still delivering the responsiveness needed for a more aggressive riding style.

Close-up of the rear suspension system on the 2025 Harley-Davidson Fat Boy, visible beneath the seat.

TWO-INTO-TWO EXHAUST

The 2025 Harley-Davidson Fat Boy’s signature two-into-two exhaust system has been redesigned to enhance both performance and sound. Engineered for high-flowing efficiency, it maximizes power output while maintaining the bike’s legendary throttle response. The deep, throaty rumble of the V-twin engine is even more pronounced, delivering an unmistakable Harley-Davidson soundtrack that turns heads. This exhaust system not only boosts performance but also adds to the Fat Boy’s bold and muscular aesthetic, reinforcing its commanding road presence.

Close-up of the chrome exhaust system on the 2025 Harley-Davidson Fat Boy, showcasing the dual exhaust pipes and rear wheel.

INNOVATION

FIVE-INCH ANALOG DISPLAY

The 2025 Harley-Davidson Fat Boy features a classic five-inch analog gauge that provides a clean, easy-to-read display for a timeless riding experience. Integrated within it is a modern digital screen that delivers essential ride information at a glance, including Ride Modes for customized performance. This combination of old-school style and modern functionality ensures that riders stay informed without distraction. With its sleek design and intuitive layout, the display perfectly complements the Fat Boy’s blend of heritage and innovation.

Close-up of the speedometer and display on the 2025 Harley-Davidson Fat Boy, showing speed, gear, and trip information.

ADJUSTABLE BRAKE LEVER

Harley-Davidson’s Fat Boy features an adjustable brake lever, allowing riders to customize the lever distance for optimal comfort and control. Whether you have a shorter reach or prefer a more extended grip, this feature ensures maximum braking efficiency for every rider. By fine-tuning the lever position, you can achieve a more responsive feel, enhancing both safety and confidence on the road. This simple yet effective adjustment makes for a smoother, more personalized riding experience.

Close-up of the chrome brake lever and hand controls on the 2025 Harley-Davidson Fat Boy.

USB-C CHARGING

The 2025 Fat Boy is equipped with a convenient USB-C charging port, ensuring your devices stay powered on every ride. Whether you’re using navigation, streaming music, or staying connected via Bluetooth, this feature keeps your essentials running without interruption. Its fast-charging capability means less downtime and more time on the road, giving you the freedom to ride longer without worry. Designed for modern riders, this small but essential upgrade adds convenience to every journey.

Close-up of the USB-C charging port on the 2025 Harley-Davidson Fat Boy, located near the engine.

INNOVATION

FIVE-INCH ANALOG DISPLAY

The 2025 Harley-Davidson Fat Boy features a classic five-inch analog gauge that provides a clean, easy-to-read display for a timeless riding experience. Integrated within it is a modern digital screen that delivers essential ride information at a glance, including Ride Modes for customized performance. This combination of old-school style and modern functionality ensures that riders stay informed without distraction. With its sleek design and intuitive layout, the display perfectly complements the Fat Boy’s blend of heritage and innovation.

Close-up of the speedometer and display on the 2025 Harley-Davidson Fat Boy, showing speed, gear, and trip information.

ADJUSTABLE BRAKE LEVER

Harley-Davidson’s Fat Boy features an adjustable brake lever, allowing riders to customize the lever distance for optimal comfort and control. Whether you have a shorter reach or prefer a more extended grip, this feature ensures maximum braking efficiency for every rider. By fine-tuning the lever position, you can achieve a more responsive feel, enhancing both safety and confidence on the road. This simple yet effective adjustment makes for a smoother, more personalized riding experience.

Close-up of the chrome brake lever and hand controls on the 2025 Harley-Davidson Fat Boy.

USB-C CHARGING

The 2025 Fat Boy is equipped with a convenient USB-C charging port, ensuring your devices stay powered on every ride. Whether you’re using navigation, streaming music, or staying connected via Bluetooth, this feature keeps your essentials running without interruption. Its fast-charging capability means less downtime and more time on the road, giving you the freedom to ride longer without worry. Designed for modern riders, this small but essential upgrade adds convenience to every journey.

Close-up of the USB-C charging port on the 2025 Harley-Davidson Fat Boy, located near the engine.

GALLERY

Specifications

Dimensions

Length: 93.1 in (2,365 mm)

Width: 38.0 in (965 mm)

Seat Height (Unladen): 26.6 in (675 mm)

Ground Clearance: 5.0 in (125 mm)

Rake: 30°

Trail: 4.1 in (104 mm)

Wheelbase: 65.0 in (1,650 mm)

Fuel Capacity: 5 gal (18.9 L)

Oil Capacity (with filter): 4.7 L

Weight (In Running Order): 694 lbs (315 kg)

Engine

Type: Milwaukee‑Eight® 117 Custom V‑Twin

Displacement: 1,923 cc (117 cu in)

Bore x Stroke: 103.5 mm x 114.3 mm

Compression Ratio: 10.3:1

Fuel System: Electronic Sequential Port Fuel Injection (ESPFI)

Exhaust: 2‑into‑2 staggered; catalyst in muffler

Performance

Engine Torque: 168 Nm @ 3,000 rpm

Horsepower: 103 HP (77 kW) @ 5,020 rpm

Fuel Economy: 5.5 l/100 km

Drivetrain

Primary Drive: Chain, 34/46 ratio

Transmission: 6-Speed Cruise Drive®

Final Drive: Belt, 30/68 ratio

Chassis

Front Fork: Dual‑bending valve 49 mm telescopic with aluminum fork triple clamps; dual rate spring; "beer can" covers

Rear Shocks: Hidden, free piston, coil‑over monoshock; 43 mm stroke; hydraulic preload adjustment

Front Tire: Michelin® Scorcher® 11 160/60R18, 70V, BW

Rear Tire: Michelin® Scorcher® 11 240/40R18, 79V, BW

Wheels: Machined, Lakester cast aluminum

Brakes: 4‑piston fixed front and 2‑piston floating rear calipers with silver, Split 7‑spoke floating rotors

Electrical

Lighting: All LED headlamp with low and high beam, signature position lighting; bullet‑style LED stop/tail/turn signals

Gauges: 5‑inch analog speedometer with digital gear indicator, odometer, fuel level, ride modes, heated gear indicator, traction control, ABS, TPMS, cruise control, clock, trip meter, range, and tachometer

Infotainment

System: Skyline™ OS

Screen Size: 12.3 inches

Audio Output: 125 watts per channel

Speakers: Two 6.5‑inch fairing speakers

AM/FM Radio: Standard

USB Connectivity: Supports SD Card, Flash Drive, and MP3 via USB connection

Bluetooth: Phone/Media Player, Headset

Navigation: Embedded GPS system with real-time traffic and weather via Wi-Fi hotspot

Frequently Asked Questions

Design

What premium paint options are available for the 2025 Fat Boy?

The Fat Boy features two-tone trajectory paint options in Vivid Black and Whiskey Fire, along with a bold new tank medallion on a classic rounded gas tank. This high‑quality factory paint provides a deep, rich finish that highlights the bike’s muscular stance.

What wheel design distinguishes the Fat Boy?

The Fat Boy rides on bold 18‑inch machined Lakester wheels wrapped in high‑performance Michelin® Scorcher® 11 tires. Cutback fenders partially expose the wheels, combining a rugged look with a refined cruiser aesthetic.

How does the headlamp nacelle contribute to the bike's design?

The signature headlamp nacelle gleams in polished chrome, enhancing the Fat Boy’s muscular front end while reflecting premium craftsmanship. Its smooth, contoured shape integrates seamlessly with the front forks for an imposing, timeless look.

Performance

How does the Milwaukee‑Eight® 117 Custom engine perform?

The Fat Boy is powered by the Milwaukee‑Eight® 117 Custom engine, which delivers an ideal balance of power and performance. It produces ample torque for effortless highway cruising and responsive acceleration, all accompanied by the unmistakable deep Harley‑Davidson rumble.

What benefits does the updated rear suspension offer?

The updated monoshock rear suspension smooths out rough roads while maintaining a firm, planted feel. Its design ensures long-distance comfort and agile responsiveness, making the bike equally at home on highways and twisty backroads.

What advantages does the two‑into‑two exhaust system provide?

The redesigned two‑into‑two exhaust system maximizes power output and enhances throttle response. It delivers a deep, throaty rumble that reinforces the Fat Boy’s bold, muscular aesthetic and ensures a commanding presence on the road.

Innovation

What features does the five‑inch analog display offer?

The Fat Boy’s classic five‑inch analog gauge is paired with a modern digital screen that provides essential ride information at a glance, including customizable Ride Modes. This blend of old‑school style and modern functionality keeps you informed without distraction.

How does the adjustable brake lever improve the riding experience?

The adjustable brake lever allows riders to fine‑tune the lever distance for optimal comfort and braking efficiency. This customization results in a more responsive, personalized feel that enhances safety and overall control.

How does USB‑C charging benefit riders?

With an integrated USB‑C charging port, the Fat Boy keeps your devices powered on every ride. Its fast‑charging capability minimizes downtime, ensuring you remain connected—whether using navigation, streaming music, or staying in touch via Bluetooth®.