2021 Harley-Davidson Fat Bob 114 Technical Analysis & Specification Breakdown
At the heart of the 2021 Harley-Davidson Fat Bob 114 custom - cruiser motorcycle, Harley-Davidson pairs a 1868 cc (114 cu in) air-cooled v2, four-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 94 HP (68.6 kW) at 5,020 rpm while maximum torque reaches 160 Nm (118 lb-ft) at 3,500 rpm, transferring power to the rear wheel through a 6-speed gearbox and belt final drive. With a specific output of 50.3 HP per liter and a 1,520 rpm working window between peak torque (3,500 rpm) and peak power (5,020 rpm), the engine character is prioritizing low-RPM tractability, mechanical longevity and relaxed throttle response over peak redline numbers.
On the scales, the Fat Bob 114 measures 306.6 kg (676 lbs) wet (curb), translating to a power-to-weight ratio of 0.31 HP/kg (3.26 kg per horsepower). Rider ergonomics and chassis geometry center around a 704 mm (27.7 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 1,615 mm (63.6 in) wheelbase engineered for planted straight-line stability. The 13.6-liter (3.6 US gal) fuel tank paired with a rated consumption of 5 L/100 km provides an estimated theoretical range of roughly 272 km (169 miles) between fill-ups.
Within MotoLibrary's Harley-Davidson archive, this model family spans 4 indexed model years from 2020 to 2023, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
50.3 HP/L
Power-to-Weight
0.31 HP/kg (3.26 kg/HP)
Power Band Window
3,500–5,020 rpm
Theoretical Range
~272 km (169 mi)
Engine
Displacement1868.0 ccm (113.99 cubic inches)
Engine TypeV2, four-stroke
Engine DetailsMilwaukee-Eight® 114
Power94.0 HP (68.6 kW)) @ 5020 RPM
Torque160.0 Nm (16.3 kgf-m or 118.0 ft.lbs) @ 3500 RPM
Compression10.5:1
Bore x Stroke102.0 x 114.0 mm (4.0 x 4.5 inches)
Fuel SystemInjection. Electronic Sequential Port Fuel Injection
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
CoolingAir
Transmission
Gearbox6-speed
Final DriveBelt (final drive)
ClutchMulti-plate with diaphragm spring in oil bath
DrivelinePrimary chain, 34/46 ratio
Performance
Fuel Consumption5.00 litres/100 km (20.0 km/l or 47.04 mpg)
Greenhouse Gases116.0 CO2 g/km. (CO2 - Carbon dioxide emission)
Exhaust2-into-1-into-2 dual side; catalyst in header
Chassis
Rake28.0°
Trail132 mm (5.2 inches)
Front SuspensionTelescopic fork
Rear SuspensionMonoshock
Wheelbase1615 mm (63.6 inches)
Ground Clearance120 mm (4.7 inches)
Wheels & Brakes
Front Tyre150/80-16
Rear Tyre180/70-B16
Front BrakesDouble disc. ABS. 4-piston.
Rear BrakesSingle disc. ABS. 2-piston.
WheelsDenim black, Structure cast aluminum with laser etched graphics
Dimensions & Weight
Dry Weight296.0 kg (652.6 pounds)
Weight incl.306.6 kg (676.0 pounds)
Power/Weight0.3176 HP/kg
Seat Height704 mm (27.7 inches) If adjustable, lowest setting.
Overall Length2340 mm (92.1 inches)
Fuel Capacity13.60 litres (3.59 US gallons)
Oil Capacity4.70 litres (4.97 US quarts)
Other
StarterElectric
Color OptionsVivid Black, Billiard Red, Deadwood Green Denim
Instruments4-inch analog tachometer with digital speedometer, gear, odometer, fuel level, clock, trip and range indication
Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.
Power
Compare engine output with similar motorcycles if acceleration, highway use or two-up riding matters.
Torque
Torque is useful for judging real-world pull, especially for touring, commuting and loaded riding.
Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
Weight
Compare weight carefully because it affects low-speed handling, parking and confidence.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.