Cruisers

2021Harley-Davidson Fat Boy 114

40 fields on record

The 2021 Harley-Davidson Fat Boy 114 is an iconic custom cruiser powered by the Milwaukee-Eight 114 V-twin engine producing 100 HP and 161 Nm of torque. Best suited for riders seeking classic American styling with modern performance, it delivers aggressive low-end power and distinctive character. Known for its imposing presence, premium build quality, and timeless design that defines the cruiser category.

Capacity: 1868.0 ccm
Engine: V-Twin, four-stroke
Gearbox: 6-speed
Dry weight: 304.4 kg
Seat height: 658 mm
Power: 100.0 HP (73.0 kW) @ 5020 RPM

⇄ Compare with another bike ＋ Add to garage All model years

What’s new for the 2021 Harley-Davidson Fat Boy 114

vs the 2020

Spec	2020	2021
Torque	160.0 Nm (16.3 kgf-m or 118.0 ft.lbs) @ 3500 RPM	161.4 Nm (16.5 kgf-m or 119.0 ft.lbs) @ 3000 RPM
Dry weight	296.0 kg (652.6 pounds)	304.4 kg (671.1 pounds)
Wet weight	306.0 kg (674.6 pounds)	317.1 kg (699.1 pounds)
Seat height	675 mm (26.6 inches)	658 mm (25.9 inches)

Other years 2020 2021 2022 2023 2024 2026

How it rides

Editorial estimate from the spec sheet - not lab tested

Off-road & trail3%

Cornering35%

City riding40%

Daily riding50%

Touring52%

Two-up55%

Track8%

Best for: Boulevard cruising and relaxed highway miles with unmistakable presence - built for torquey, straight-line style rather than speed or agility.
Built for: Iconic solid-wheel Harley muscle cruiser: huge torque from the Milwaukee-Eight 114, deep exhaust rumble, all about attitude and effortless low-rev thrust.
Not ideal for: Not for sport riders, twisty-road chargers, off-road use, or beginners intimidated by heavy machines; poor at nimble maneuvering and spirited cornering.

Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.

Will it fit you?

Worked out in your browser - nothing is sent to us

Your height

Inseam (optional)

Units

At 658mm, a rider of 68.9" with a 31" (estimated) inseam will reach the ground with both feet flat on the 2021 Harley-Davidson Fat Boy 114, with a cramped knee angle of around 70 degrees and an upright riding position.

Assumes about 30mm of suspension sag once seated. This is an approximation from category-typical geometry, not a measurement of this bike or of you - sit on one before you buy.

More bikes at 750 mm or under — Short Kings →

Find bikes that fit your height →

Range and running costs

Worked out in your browser - nothing is sent to us

Units

Currency

Fuel per litre

Riding a year

Based on the maker's published fuel consumption and tank size. Real-world figures depend on how and where you ride, and the last litres of a tank are reserve. Prices shown greyed are examples - type your own.

Full specifications

Engine

Capacity: 1868.0 ccm
Power: 100.0 HP (73.0 kW) @ 5020 RPM
CO2 Emissions: 132 CO2 g/km
EPA Est. Fuel Consumption: 5.62 L/100km (41.9 US mpg)
EPA CO Emissions: 2.1 CO g/km
Torque: 161.4 Nm (16.5 kgf-m) @ 3000 RPM
Engine type: V-Twin, four-stroke
Fuel consumption: 5.00 litres/100 km (20.0 km/l)
Power/weight ratio: 0.3285 HP/kg (dry)
Bore x stroke: 102.0 x 114.0 mm
Compression: 10.5:1
Cooling system: Air
Fuel system: Injection
Starting: Electric
Aspiration: Naturally aspirated
Valves per cylinder: 4

Transmission

Gearbox: 6-speed
Transmission type: Manual
Final drive: Belt
Clutch: Multi-plate with diaphragm spring in oil bath

Dimensions & weight

Wheelbase: 1666 mm
Overall length: 2370 mm
Seat height: 658 mm
Dry weight: 304.4 kg
Wet weight: 317.1 kg
Fuel capacity: 18.90 litres
Ground clearance: 114 mm
Oil capacity: 4.70 litres

Chassis & suspension

Front suspension: Telescopic fork
Rear suspension: Twin shocks
Rake (fork angle): 30.0°
Trail: 104 mm

Brakes & wheels

Front brakes: Double disc. ABS. 4-piston.
Rear brakes: Single disc. ABS. 2-piston.
ABS: Yes
Front tyre: 160/60-R18
Rear tyre: 240/40-R18

Other

Color options: Vivid Black, Deadwood Green, Black Jack Metallic, Gauntlet Grey Metallic/Vivid Black
Fuel Tank Material: Metal

Specs last verified against published sources: October 2026.

Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.

What changed, year to year

Differences highlighted

Specification	2020	2021	2023	2024	2026
Capacity	1868 cc	1868 cc	1868 cc	1868 cc	1868 cc
Dry weight	296 kg	304 kg	304 kg	304 kg	304 kg
Seat height	675 mm	658 mm	658 mm	658 mm	658 mm
Fuel capacity	18.9 L	18.9 L	18.9 L	18.9 L	18.9 L

Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.

Rider Reviews

—

☆☆☆☆☆

Be the first to rate

MotorcycleDB

The 2021 Harley-Davidson Fat Boy 114 motorcycle is a powerful and stylish ride that is sure to turn heads on the road. With its 114 cubic inch Milwaukee-Eight engine, this bike delivers impressive performance and a smooth, satisfying ride. The Fat Boy 114 also boasts a distinctive design, with its solid, muscular build and classic Harley-Davidson styling. Riders will appreciate the comfortable seating position and easy handling, making it a great choice for both long rides and daily commuting.

In addition to its powerful performance, the 2021 Harley-Davidson Fat Boy 114 motorcycle offers a range of advanced technology features, including an intuitive infotainment system and advanced suspension for a smooth, controlled ride. This bike also comes with a range of customization options, allowing riders to personalize their ride to their exact preferences. Overall, the Fat Boy 114 is a top choice for motorcycle enthusiasts looking for a high-performance bike with iconic Harley-Davidson style.

Own one? Add it to My Garage and write an owner review with an Owner badge.