14 August. Friday 2026
Harley-Davidson Fat Boy 114 - 2021 Specifications and Reviews
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.
General information | |
| Price as new | 3.2 See the detailed rating of design and look, maintenance cost, engine performance, etc. Compare with any other bike. |
| Category | Custom / cruiser |
| Year | 2021 |
| Model | Harley-Davidson Fat Boy 114 |
Engine and Transmission Specifications | |
| Exhaust system | 2-into-1-into-2 dual side; catalyst in header |
| Greenhouse gases | 116.0 CO2 g/km. (CO2 - Carbon dioxide emission) |
| Fuel consumption | 5.00 litres/100 km (20.0 km/l or 47.04 mpg) |
| Driveline | Primary chain, 34/46 ratio |
| Clutch | Multi-plate with diaphragm spring in oil bath |
| Transmission type | Belt (final drive) |
| Gearbox | 6-speed |
| Cooling system | Air |
| Fuel control | Double Overhead Cams/Twin Cam (DOHC) |
| Fuel system | Injection. Electronic Sequential Port Fuel Injection |
| Bore x Stroke | 102.0 x 114.0 mm (4.0 x 4.5 inches) |
| Compression | 10.5:1 |
| Torque | 161.4 Nm (16.5 kgf-m or 119.0 ft.lbs) @ 3000 RPM |
| Power | 100.0 HP (73.0 kW) @ 5020 RPM |
| Engine details | Milwaukee-Eight® 114 |
| Engine type | V2, four-stroke |
| Capacity: | 1868.0 ccm (113.99 cubic inches) |
| | |
Brakes, suspension, Frame and wheels | |
| Wheels | Machined, Lakester cast aluminum |
| Rear brakes | Single disc. ABS. 2-piston. |
| Front brakes | Double disc. ABS. 4-piston. |
| Rear tire | 240/40-R18 |
| Front tire | 160/60-R18 |
| Rear Suspension | Twin shocks |
| Front Suspension | Telescopic fork |
| Trail | 104 mm (4.1 inches) |
| Rake (fork angle) | 30.0° |
Physical measures and capacities | |
| Oil capacity | 4.70 litres (4.97 US quarts) |
| Fuel capacity | 18.93 litres (5.00 US gallons) |
| Wheelbase | 1666 mm (65.6 inches) |
| Ground clearance | 114 mm (4.5 inches) |
| Overall length | 2385 mm (93.9 inches) |
| Seat height | 658 mm (25.9 inches) If adjustable, lowest setting. |
| Power/weight ratio | 0.3286 HP/kg |
| Weight incl. oil, gas, etc | 317.1 kg (699.0 pounds) |
| Dry weight | 304.4 kg (671.0 pounds) |
Other specs | |
| Maintenance | Find parts, fluids, filters, maintenance tools and service items on eBay |
| Light | High beam, neutral, low oil pressure, turn signals, engine diagnostics, security system (optional), 6-speed, low fuel warnings |
| Instruments | 5-inch analog speedometer with digital gear, odometer, fuel level, clock, trip, range and tachometer indication |
| Starter | Electric |
| Color options | Vivid Black, Deadwood Green, Black Jack Metallic, Gauntlet Grey Metallic/Vivid Black |
Performance Profile & Rider Fit
94 hp
Peak Power
4.8s
0-60 mph
Best For
Track8%
City40%
Cornering35%
Daily Riding50%
Touring52%
Passenger55%
Rider Profile
| Best For | Suited to intermediate and experienced riders comfortable managing 300+ kg of low-slung muscle; the low seat helps but the weight demands respect at low speed. |
| Purpose | Boulevard cruising and relaxed highway miles with unmistakable presence - built for torquey, straight-line style rather than speed or agility. |
| Rider Fit | Very low 658mm seat, forward controls, wide pulled-back bars and a massive 240-section rear tire; heavy but planted, with feet-forward relaxed ergonomics. |
| Character | 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. |
Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.
Rider Reviews
Total comments: 1
MotorcycleDB Review
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.Add a Comment
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