Across the 2011 and 2012 model years, the Harley-Davidson FLSTFB Fat Boy Special motorcycle has supplied wet/running weights ranging from 727.5 lb (330 kg) and dry weights ranging from 690 lb (313 kg) to 701.1 lb (318 kg), depending on model year.
Harley-Davidson FLSTFB Fat Boy Special weight overview
This sits in heavyweight territory. Riders should think about garage movement, backing up, surface slope and passenger/luggage load as much as the on-road feel.
Very Heavy Motorcycle
How heavy is the Harley-Davidson FLSTFB Fat Boy Special?
wet weight
Using a model-level wet weight comparison, the Harley-Davidson FLSTFB Fat Boy Special is heavier than about 70.4% of 108 Harley-Davidson motorcycles with compatible weight data.
Dry vs ready-to-ride weight
Bike + rider total weight
These totals use the model’s representative wet weight. They exclude riding gear, luggage and a passenger.
Harley-Davidson FLSTFB Fat Boy Special weight & related specs
| Model years covered | 2011, 2012 |
|---|---|
| Wet / running weight | 727.5 lb (330 kg) |
| Dry weight | 690 lb (313 kg) to 701.1 lb (318 kg) |
| Engine displacement | 1,584 cc to 1,690 cc |
| Torque | 92.9 lb-ft (126 Nm) |
| Fuel capacity | 4.99 US gal (18.9 L) |
| Full-tank fuel weight (estimated) | 31 lb (14.1 kg) |
Weight changes by model year
The 2011 model is used as the baseline where data is available. Only later supplied values that differ are shown below. A year pill does not mean every individual weight field was supplied for that year.
Useful weight calculations
| Torque per 100 lb | 13.26 lb-ft / 100 lb |
|---|---|
| Displacement per pound | 2.26 cc / lb to 2.32 cc / lb |
| Weight per 100 cc | 43 lb / 100 cc to 44.3 lb / 100 cc |
| Fuel weight as % of bike weight | 4.3% to 4.4% |
| Weight with full tank | 721.1 lb (327.1 kg) to 732.1 lb (332.1 kg) |
What the weight numbers tell you
Harley-Davidson FLSTFB Fat Boy Special weight FAQ
What does the Harley-Davidson FLSTFB Fat Boy Special weigh ready to ride?
The supplied figures span 727.5 lb (330 kg) for wet/running weight and 690 lb (313 kg) to 701.1 lb (318 kg) for dry weight across the years in this page. Wet weight is the better guide to what you actually manage on the road.
Is the Harley-Davidson FLSTFB Fat Boy Special heavy compared with other Harley-Davidson motorcycles?
Relatively speaking, it is on the heavier side. The model sits near the 70th weight percentile in its Harley-Davidson category, so it is heavier than most of the compatible comparison set.
Does the Harley-Davidson FLSTFB Fat Boy Special weight change by model year?
Not every covered year uses the same figure. The page groups identical values together and lists the later model years where the supplied weight specification changes.
How much does the Harley-Davidson FLSTFB Fat Boy Special fuel weigh?
The listed tank capacity is 4.99 US gal (18.9 L). Using approximately 0.745 kg/L gasoline, a full tank is roughly 31 lb (14.1 kg). That is an estimate for fuel mass, not an official Harley-Davidson curb-weight calculation.
How heavy is the Harley-Davidson FLSTFB Fat Boy Special with an average-size rider?
A 180 lb rider brings the simple bike-plus-rider total to roughly 907.5 lb (411.6 kg) using the representative wet/running figure. Gear and luggage would add more.
What does the Harley-Davidson FLSTFB Fat Boy Special weigh with a full tank?
Filling the listed tank brings the calculated bike weight to roughly 721.1 lb (327.1 kg) to 732.1 lb (332.1 kg). This estimate is most useful when no official wet/running figure is available.
How much weight do fuel and fluids add to the Harley-Davidson FLSTFB Fat Boy Special?
The supplied model-year data shows roughly 37.5 lb (17 kg) between dry and wet/running weight. The exact gap can vary by year and by the manufacturer’s weight definition.
How much of the Harley-Davidson FLSTFB Fat Boy Special total weight comes from fuel?
Based on the available weight basis, a full tank of gasoline represents about 4.3% to 4.4% of the motorcycle’s weight.
How does Harley-Davidson FLSTFB Fat Boy Special torque compare with its weight?
The calculated torque-to-weight range is 13.26 lb-ft per 100 lb. It is useful for comparing bikes with very different overall weights.
Motorcycle specifications can vary by model year, market, equipment and the exact dry/curb-weight definition. Calculated fuel-weight and ratio figures on this page are estimates derived from the supplied specifications. Confirm critical figures in the owner’s manual or on the official Harley-Davidson website.