2021 Harley-Davidson Fat Bob 114 Specifications

Name: 2021 Harley-Davidson Fat Bob 114
Brand: Harley-Davidson

Custom / cruiser • Specs last verified 13 July 2026

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2021 Harley-Davidson Fat Bob 114 Overview

Harley-Davidson Fat Bob 114 is a custom / cruiser motorcycle, displacing 1868 cc. Power comes from a V2, four-stroke engine running Double Overhead Cams/Twin Cam (DOHC) valve actuation, a compression ratio of 10.5:1. Bore and stroke come in at 102 x 114 mm. On the performance side, it delivers 160 Nm @ 3500 Revolutions of torque. On the road, the 2021 Fat Bob 114 tips the scales at 306.6 kg, carries a 13.60-litre fuel tank, offers a seat height of 704 mm and spans a 1615 mm wheelbase. That's roughly 6 kg heavier than the average custom / cruiser motorcycle in our database. The full 2021 Harley-Davidson Fat Bob 114 spec sheet below covers every technical detail, from suspension travel to tyre sizes.

2021 Fat Bob 114 - Pros & Cons

Strengths

Fuel injection: Fuel injection means consistent cold starts and clean throttle response without the fussiness of a carbureted setup.
Accessible seat height: A 704 mm seat height keeps this manageable for most riders, which helps confidence at parking-lot speeds.
Low-maintenance final drive: Running Belt (final drive) final drive cuts out the regular chain cleaning and tensioning that most bikes need.

Considerations

Age-related wear: Nothing specific stands out as a weak point on the Fat Bob 114 - the usual used-bike checks (service history, consumables, tyres) apply.

Wear Points & Servicing Notes

Fuelling & injector care

The fuel injection on the Fat Bob 114 needs little beyond good fuel and periodic use of an injector-cleaner additive - no jetting or float-bowl maintenance to worry about.

Valve clearance checks

With Double Overhead Cams/Twin Cam (DOHC) valve gear, the Fat Bob 114 needs periodic clearance checks; caught early they're a cheap adjustment, left unchecked they accelerate valve seat wear.

Brake disc and pad wear

Braking up front comes from Double disc. ABS. 4-piston. - solid stopping power, with disc and pad wear best checked on the same schedule as tyre changes.

Suspension condition on used examples

The Fat Bob 114's suspension runs Telescopic fork at the front. The rear uses Monoshock. Fork-seal condition and rear linkage play are the two things worth checking before buying used.

Final drive maintenance

The Fat Bob 114 runs belt final drive: no lubrication or frequent adjustment like a chain, though belt tension and wear are worth a periodic look.

Handling the weight at a standstill

306.6 kg puts the Fat Bob 114 toward the heavier end of its class. It's most noticeable at walking pace; once underway the mass settles into the handling rather than fighting it.

Fat Bob 114 - Buying & Maintenance Guide

What to check before buying

Before handing over money for a used 2021 Harley-Davidson Fat Bob 114, cover the fundamentals: service book and oil change history, chain and sprocket wear, and any sign of oil weeping around the casings. Cold-starting it yourself tells you a lot - a healthy Fat Bob 114 should catch quickly and settle into a smooth idle.

Oil and filter changes

Nothing protects a Fat Bob 114's engine like disciplined oil changes - stay on the manufacturer's schedule (roughly every 6,000 km or annually). The sump holds 4.70 litres, so budget for that volume of quality motorcycle-specific engine oil. Match the viscosity grade to what the owner's manual specifies, not what's cheapest.

Fuel system care

Fuel injection on the Fat Bob 114 needs little attention beyond decent fuel and an occasional system-cleaner additive. Anything left standing for three months or more should have its fuel drained and replaced before it varnishes the injectors.

Valve clearance service

Valve clearances are easy to overlook on a used Fat Bob 114 since a bike out of spec doesn't always feel obviously wrong - but the wear it causes is real. Ask the seller for documentation before assuming it's been done.

2021 Harley-Davidson Fat Bob 114 - Frequently Asked Questions

What engine does the 2021 Harley-Davidson Fat Bob 114 have?

The 2021 Harley-Davidson Fat Bob 114 uses a V2, four-stroke engine with 1868 cc of displacement.

How much does the 2021 Harley-Davidson Fat Bob 114 weigh?

The 2021 Harley-Davidson Fat Bob 114 weighs 306.6 kg. This is the manufacturer's wet figure.

How much power does the 2021 Harley-Davidson Fat Bob 114 make?

The 2021 Harley-Davidson Fat Bob 114 produces 160 Nm @ 3500 Revolutions of torque.

What is the fuel tank capacity of the 2021 Harley-Davidson Fat Bob 114?

The 2021 Harley-Davidson Fat Bob 114 has a 13.60-litre fuel tank. At around 5-6 litres per 100 km, that is roughly 226-272 km between stops.

Is the 2021 Harley-Davidson Fat Bob 114 suitable for shorter riders?

The 2021 Harley-Davidson Fat Bob 114 has a seat height of 704 mm. This is a comfortable, accessible height for most riders.

What brakes does the 2021 Harley-Davidson Fat Bob 114 have?

The 2021 Harley-Davidson Fat Bob 114 uses Double disc. ABS. 4-piston. at the front and Single disc. ABS. 2-piston. at the rear.

What tyre sizes does the 2021 Harley-Davidson Fat Bob 114 use?

The front tyre size on the 2021 Harley-Davidson Fat Bob 114 is 150/80-16.

How much oil does the 2021 Harley-Davidson Fat Bob 114 take?

The 2021 Harley-Davidson Fat Bob 114 takes 4.70 litres of engine oil at a full oil and filter change. Always verify against the dipstick or sight glass after filling.

Harley-Davidson Fat Bob 114 Spec Evolution

The Harley-Davidson Fat Bob 114 was produced across 4 model years (2020-2023). The table below highlights the key specifications that changed across the production run - useful whether you are comparing years or tracking down a specific variant.

Specification	2020	2021	2022	2023
Wet Weight	306.0 kg / 674.6 lbs	306.6 kg / 676.0 lbs	306.2 kg / 675.0 lbs	317.1 kg / 699.0 lbs
Dry Weight	296 kg / 652.6 lbs	296 kg / 652.6 lbs	296.2 kg / 653.0 lbs	304.4 kg / 671.0 lbs
Engine Detail	Milwaukee-Eight® 114 engine	Milwaukee-Eight® 114	Milwaukee-Eight® 114	Milwaukee-Eight® 114
Seat Height	710 mm / 28.0 in.	704 mm / 27.7 in.	704 mm / 27.7 in.	658 mm / 25.9 in.
Fuel Capacity	13.60 litres / 3.59 US gallons	13.60 litres / 3.59 US gallons	13.60 litres / 3.59 US gallons	18.93 litres / 5.00 US gallons
Oil Capacity (Quarts)	3.49 US quarts	4.97 US quarts	4.97 US quarts	4.97 US quarts
Oil Capacity (l)	3.30 litres	4.70 litres	4.70 litres	4.70 litres
Ground Clearance (mm)	120 mm	120 mm	120 mm	114 mm

Key Specifications

Engine

V2, four-stroke

Power

Not published by manufacturer

Torque

160.0 Nm (16.3 kgf-m or 118.0 ft.lbs) @ 3500 Revolutions

Top Speed

Not published by manufacturer

Weight

306.6 kg / 676.0 lbs

Fuel Capacity

13.60 litres / 3.59 US gallons

Full 2021 Harley-Davidson Fat Bob 114 Specifications

Colours Vivid Black, Billiard Red, Deadwood Green Denim

Ground Clearance (in.) 4.7 inches

Ground Clearance (mm) 120 mm

Seat Height 704 mm / 27.7 in.

Wheelbase 1615 mm / 63.6 in.

Length 2340 mm / 92.1 in.

Oil Capacity (l) 4.70 litres

Oil Capacity (Quarts) 4.97 US quarts

Dry Weight 296 kg / 652.6 lbs

Fuel Capacity 13.60 litres / 3.59 US gallons

Wet Weight 306.6 kg / 676.0 lbs

Max Torque 160.0 Nm (16.3 kgf-m or 118.0 ft.lbs) @ 3500 Revolutions

Power-to-Weight Ratio 0.3176 HP/kg

Bore x Stroke (in,) 4.0 x 4.5 inches

Bore x Stroke (mm) 102.0 x 114.0 mm

CO2 116.0 CO2 g/km. (CO2 - Carbon dioxide emission)

Displacement (cc) 1868.0 cc

Displacement (ci) 113.99 cubic inches

Engine Type V2, four-stroke

Fuel Control Double Overhead Cams/Twin Cam (DOHC)

Engine Detail Milwaukee-Eight® 114

Fuel System Injection. Electronic Sequential Port Fuel Injection

Compression Ratio 10.5:1

Exhaust 2-into-1-into-2 dual side; catalyst in header

Fuel Consumption 5.00 litres/100 km (20.0 km/l or 47.04 mpg)

Starter Electric

Clutch Multi-plate with diaphragm spring in oil bath

Final Drive Belt (final drive)

Gearbox 6-speed

Primary Drive Primary chain, 34/46 ratio

Suspension - Front Telescopic fork

Suspension - Rear Monoshock

Rake 28.0°

Trail 132 mm / 5.2 in.

Instrumentation 4-inch analog tachometer with digital speedometer, gear, odometer, fuel level, clock, trip and range indication

Lighting system High beam, neutral, low oil pressure, turn signals, engine diagnostics, security system (optional), 6-speed, low fuel warnings

Brakes - Front Double disc. ABS. 4-piston.

Brakes - Rear Single disc. ABS. 2-piston.

Rims Denim black, Structure cast aluminum with laser etched graphics

Tyres - Front 150/80-16

Specifications are compiled from manufacturer documentation and cross-referenced technical sources, and corrected on an ongoing basis. Spot an error? Let us know.