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Horsepower

101 HP

Seat Height, Laden

25.9 in.

Fuel Economy

49 mpg

Engine Torque

122 ft-lb

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Fat Boy® Gray Ghost

At a Glance Born a legend. Back to Raise Hell. Some bikes make history. Others rewrite it. In 1988 and 1989, Willie G. Davidson rode early Fat Boy® prototypes into Daytona, seeking direct feedback from riders and igniting a legacy that would span generations. By 1990, the Fat Boy was born, quickly becoming one of the most legendary models in Harley-Davidson history. Now, 35 years later, the new 2025 Fat Boy® Gray Ghost charges forward, bringing that legacy full circle. Inspired by the riders who made it an icon, this tribute honors the past while the next generation keeps the fire burning.

“Icons” Medallion

The Icons medallion on the rear fender speaks to this unique collection and the incredible exclusivity of this motorcycle.

Serialization

Limited to just 1,990, each bike is individually numbered to honor the original 1990 Fat Boy®—never to be made again.

Tank Medallion

The original and most iconic Fat Boy® tank medallion is back with flat, straight wings in a brushed silver finish.

New Milwaukee-Eight® 117 Custom V-twin Engine

A more powerful Milwaukee-Eight® 117 V-twin paired with a classic-style round air cleaner, delivering strong torque for fast launches and effortless highway cruising.

Retuned Rear Suspension

Updated monoshock suspension offers a smoother ride when you want comfort and stays firm when it’s time to get aggressive.

Two-Into-Two Exhaust

Updated design pays homage to the original Fat Boy’s two-into-two chrome pipes while delivering improved high-flow performance.

New Ride Modes + Analog Display

The five-inch tank-mounted analog gauge nods to the original Fat Boy®, now paired with a digital display that shows key ride data, including gear position and selectable Ride Modes (Road, Rain, and Sport), so you can fine-tune your ride like never before.

New Hand Controls

Ergonomic, intuitive hand controls give you quick access to Cruise Control and new selectable Ride Modes.

New PVD Reflection Finish

Once reserved for details like tank medallions and exhaust shields, PVD now takes over the Fat Boy® Gray Ghost. Its fuel tank and fenders feature this high-tech, chrome-like finish for the first time on a production Harley-Davidson®, creating a head-turning mirror effect under H-D’s signature clear coat.

Fat Boy® Gray Ghost

EngineMilwaukee-Eight® 117 Custom Bore4.075 in.
Stroke4.5 in. Displacement117 cu in
Compression Ratio10.3:1 Fuel SystemElectronic Sequential Port Fuel Injection (ESPFI)
Exhaust2-into-2 staggered; catalyst in muffler
Length93.1 in. Width40 in.
Seat Height, Laden25.9 in. Seat Height, Unladen26.6 in.
Ground Clearance4.9 in. Rake30
Trail4.1 in. Wheelbase65 in.
Tires, TypeMichelin® Scorcher 11, front and rear Tires, Front Specification160/60R18,70V,BW
Tires, Rear Specification240/40R18,79V,BW Fuel Capacity5 gal.
Oil Capacity (w/filter)5 qt. Weight, In Running Order694 lb.
Engine Torque Testing MethodJ1349 Engine Torque122 ft-lb
Engine Torque (rpm)3,000 Horsepower101 HP / 75 kW @ 4800 rpm
Lean Angle, Right (deg.)25.6 Lean Angle, Left (deg.)25.6
Fuel Economy Testing MethodEstimated City/Hwy Fuel Economy49 mpg
Primary DriveChain, 34/46 ratio Gear Ratios (overall) 1st9.311
Gear Ratios (overall) 2nd6.454 Gear Ratios (overall) 3rd4.793
Gear Ratios (overall) 4th3.882 Gear Ratios (overall) 5th3.307
Gear Ratios (overall) 6th2.79
Front ForkDual-bending valve 49 mm telescopic with aluminum fork triple clamps; dual rate spring; "beer can" covers Rear ShocksHidden, free piston, coil-over monoshock; 43mm stroke; hydraulic preload adjustment
Wheels, Front TypeMachined, Lakester cast aluminum Wheels, Rear TypeMachined, Lakester cast aluminum
Brakes, Caliper Type4-piston fixed front and 2-piston floating rear Brakes, Rotor TypeFront and rear silver, Split 7-spoke floating rotors
Lights (as per country regulation), Headlamp, Tail/Stop/Front Signal LightsAll LED headlamp, low and high beam with signature position lighting Gauges5-inch analog speedometer with digital gear, odometer, fuel level, ride modes, heated gear, traction control, ABS, TPMS, cruise control, clock, trip, range and tachometer indication
Voice Recognition LanguagesPhone functions only Voice Recognition LanguagesTuner/Media/Navigation

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