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Motorcycle specifications Harley-Davidson1920 Softail Fat Boy Gray Ghost FLSTFI 2025 Metal Gray Solid

Cruiser

The Fat Boy may not have invented the custom bike, but it did give it new credentials, almost to the point of becoming an emblem of the category. A product deeply rooted in the image of America: big tires, big engine, big mouth and big charisma. This model, which was only to remain in the range for a short time, is still around 35 years after its birth. So Harley decided to celebrate with a special Gray Ghost series.

Shining brightly

A flash in the night! This steel phantom shines, sparkles and parades like a jet-setting megalomaniac. This Harley is guaranteed to dislocate the cervical vertebrae of every gaze. The finish pushes its level to the point where its shimmer transposes the spirit of light. Thanks to the PVD process applied to the mudguards and fuel tank, the mirror effect is striking. It's as if the machine had drowned in chrome... or perhaps a T-1000 in liquid metal has changed its programming to become this Gray Ghost and better trap Schwarzy' (the Fat Boy is, remember, the motorcycle in a key scene in Terminator 2).

Harley-Davidson 1920 Softail Fat Boy Gray Ghost  FLSTFI 2025 - 1Harley-Davidson 1920 Softail Fat Boy Gray Ghost  FLSTFI 2025 - 1
Harley-Davidson 1920 Softail Fat Boy Gray Ghost  FLSTFI 2025 - 2Harley-Davidson 1920 Softail Fat Boy Gray Ghost  FLSTFI 2025 - 2Harley-Davidson 1920 Softail Fat Boy Gray Ghost  FLSTFI 2025 - 3Harley-Davidson 1920 Softail Fat Boy Gray Ghost  FLSTFI 2025 - 3Harley-Davidson 1920 Softail Fat Boy Gray Ghost  FLSTFI 2025 - 4Harley-Davidson 1920 Softail Fat Boy Gray Ghost  FLSTFI 2025 - 4Harley-Davidson 1920 Softail Fat Boy Gray Ghost  FLSTFI 2025 - 5Harley-Davidson 1920 Softail Fat Boy Gray Ghost  FLSTFI 2025 - 5Harley-Davidson 1920 Softail Fat Boy Gray Ghost  FLSTFI 2025 - 6Harley-Davidson 1920 Softail Fat Boy Gray Ghost  FLSTFI 2025 - 6

To better blend in with its identity, the bike covers its frame in "Bright Silver" gray, receives a host of chrome parts and then multiplies nods to the original model - the air filter is round, the saddle is adorned with laces, the rocker covers feature yellow trim, the brand logo has the same profile as back then, and the center console discreetly displays a "35th Anniversary" inscription. Then, less modestly, announces the progressive number in this limited edition of 1,990; like the model's year of birth. A leather strap concludes the attention to detail on the tank.

The most attentive will have spotted the small "Icons" badge behind the saddle. This is the crest for the Milwaukee models in this specialized collection, where Harley expresses its past and brings it to life through commemorative models. There was theElectra Glide Revival in 2021, the Low Rider El Diablo the following year, then theElectra Glide Highway King, and last year brought a Hydra Glide Revival. The Fat Boy Gray Ghost writes the 5th volume of this novel.

Harley-Davidson 1340 Fat Boy The 1990 Fat Boy model

So much technology since the beginning

Close the page and press the starter button. The huge Milwaukee-Eight engine comes to life. Like the standard Fat Boy, it grunts its 117 cubic Inches! That's 1923 cm3 of mechanical depth. Big, fat breath, chewing up its power and expelling it into a huge 240 mm gumdrop. Except that it has lost a tiny bit of watts: 101 hp on the Ghost versus 103 on the normal model. A little less torque, 165 Nm versus 168, but this maximum is available 250 rpm lower, at 2750 rpm. When you think that the first Fat Boy of the dynasty produced just 67 hp and 97 Nm from the twin 1340 Evolution....

Which arrived unfinished, carbureted and controlled solely by the right hand. Today, the M8 117 block can be calibrated in 3 variants, depending on the model it's installed in: "High Output", "Classic", or "Custom". It's the latter that drives the Fat Boy, with its emphasis on acceleration. On top of this, Harley installs three riding modes (Sport / Road / Rain), traction control, ABS cornering and residual torque management. Riders can also take advantage of tire pressure monitoring, a USB-C port, all-LED lighting and cruise control.

For its 35th birthday, the Fat Boy enters Harley-Davidson's revival-prestige selection, the Icons, with a spectacular dress of light and silver. A finish that costs an extra 3,500 euros. A detail for her, the pinnacle of a story for others.

M.B - manufacturer's photos

Harley-Davidson 1920 Softail Fat Boy Gray Ghost  FLSTFI

Harley-Davidson 1920 Softail Fat Boy Gray Ghost FLSTFI (2025) : What you need to know before you buy

Prices

Basic version
United KingdomUnited Kingdom
£25,195
SpainSpain
34,000€
United StatesUnited States
$25,399
FranceFrance
30,390€

Bikers' reviews

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Performance

Specifications

Harley-Davidson 1920 Softail Fat Boy Gray Ghost FLSTFI 2025
  • Chassis
  • Frame : Double tubular steel cradle
  • Fuel capacity : 18.90 liters (4.99 US gallons)
  • Seat height : 675 mm (26.57 in)
  • Length : 2,365 mm (93.11 in)
  • Width : 965 mm (37.99 in)
  • Min height : 1,107 mm (43.58 in)
  • Wheelbase : 1,650 mm (64.96 in)
  • Curb mass : 315 kg (694 lb)
  • Front axle
  • Fourche telescopique Ø 41.3 mm, Wheel travel : 130 mm (5.12 in)
  • Angle de chasse : 30 °
  • Braking 1 disc Ø 300 mm (11.81 in), 4-piston caliper
  • Front tire : 160 / 60 - 18 → Order this type of tire
Harley-Davidson 1920 Softail Fat Boy Gray Ghost  FLSTFI 2025 specifications
  • Transmission
  • 6 stage gearbox , manual
  • Secondary belt drive
  • Rear axle
  • Under-seat monoshock, Wheel travel : 86 mm (3.39 in)
  • Preload adjustment
  • Braking 1 disc Ø 292 mm (11.5 in), 2-piston caliper
  • Rear tire : 240 / 40 - 18 → Order this type of tire
  • Standard equipment
  • Brake assist : ABS standard
  • Number of riding modes : 3
  • ABS Cornering
  • Gear indicator
  • Cruise control
  • USB plug
  • Keyless ignition
  • Traction control
  • Engine-brake control
  • Tire pressure monitoring system

Gallery

Models

2025

Compare

Compare the 1920 Softail Fat Boy Gray Ghost FLSTFI to its competitors

Price

Harley-Davidson 1920 Softail Fat Boy Gray Ghost FLSTFI 2025 : $25399
Triumph 2500 Rocket III R Evel Knievel Limited Edition 2025 : $27495
BMW 1800 R 18 2025 : $15395
Indian 1890 Chief Dark Horse 2025 : $18499

Acceleration

Harley-Davidson 1920 Softail Fat Boy Gray Ghost FLSTFI 2025 Undisclosed
Triumph 2500 Rocket III R Evel Knievel Limited Edition 2025 Undisclosed
BMW 1800 R 18 2025 : 4.8 s
Indian 1890 Chief Dark Horse 2025 Undisclosed

Fuel consumption

Harley-Davidson 1920 Softail Fat Boy Gray Ghost FLSTFI 2025 : 5.50 liters/100km (0.43 mpg)
Triumph 2500 Rocket III R Evel Knievel Limited Edition 2025 : 6.60 liters/100km (0.36 mpg)
BMW 1800 R 18 2025 : 5.60 liters/100km (0.42 mpg)
Indian 1890 Chief Dark Horse 2025 : 5.40 liters/100km (0.44 mpg)

Range

Harley-Davidson 1920 Softail Fat Boy Gray Ghost FLSTFI 2025 : 344 km (214 miles)
Triumph 2500 Rocket III R Evel Knievel Limited Edition 2025 : 273 km (170 miles)
BMW 1800 R 18 2025 : 286 km (178 miles)
Indian 1890 Chief Dark Horse 2025 : 280 km (174 miles)

Torque

Harley-Davidson 1920 Softail Fat Boy Gray Ghost FLSTFI 2025 : 16.8 mkg
Triumph 2500 Rocket III R Evel Knievel Limited Edition 2025 : 22.94 mkg
BMW 1800 R 18 2025 : 16.6 mkg
Indian 1890 Chief Dark Horse 2025 : 15.9 mkg

Power

Harley-Davidson 1920 Softail Fat Boy Gray Ghost FLSTFI 2025 : 101 ch (99.60 hp)
Triumph 2500 Rocket III R Evel Knievel Limited Edition 2025 : 182 ch (179.50 hp)
BMW 1800 R 18 2025 : 91 ch (89.70 hp)
Indian 1890 Chief Dark Horse 2025 : 90 ch (88.80 hp)

Power-to-Weight ratio

Harley-Davidson 1920 Softail Fat Boy Gray Ghost FLSTFI 2025 : 3 kg/ch *
Triumph 2500 Rocket III R Evel Knievel Limited Edition 2025 : 1.68 kg/ch *
BMW 1800 R 18 2025 : 3.69 kg/ch *
Indian 1890 Chief Dark Horse 2025 : 3.31 kg/ch

Torque-to-Weight ratio

Harley-Davidson 1920 Softail Fat Boy Gray Ghost FLSTFI 2025 : 17.78 kg/mkg *
Triumph 2500 Rocket III R Evel Knievel Limited Edition 2025 : 13.14 kg/mkg *
BMW 1800 R 18 2025 : 19.93 kg/mkg *
Indian 1890 Chief Dark Horse 2025 : 18.49 kg/mkg

Speed

Harley-Davidson 1920 Softail Fat Boy Gray Ghost FLSTFI 2025 : over 175 km/h (108.70 mph)
Triumph 2500 Rocket III R Evel Knievel Limited Edition 2025 : approximately 240 km/h (149.10 mph)
BMW 1800 R 18 2025 : over 180 km/h (111.80 mph)
Indian 1890 Chief Dark Horse 2025 : over 180 km/h (111.80 mph)

CO² emissions

Harley-Davidson 1920 Softail Fat Boy Gray Ghost FLSTFI 2025 : 128 g/km
Triumph 2500 Rocket III R Evel Knievel Limited Edition 2025 : 152 g/km
BMW 1800 R 18 2025 : 129 g/km
Indian 1890 Chief Dark Horse 2025 : 129 g/km
Comparison
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Bikers' reviews (1)

French Model 2025
Pretty but heavy and expensive! You really have to want to buy into the Harley-Davidson myth! Rating : 4/5
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