Across the 2013, 2015 and 2016 model years, the Harley-Davidson Softail Fat Boy Special motorcycle has supplied wet/running weights ranging from 727.5 lb (330 kg) to 734.1 lb (333 kg) and dry weights ranging from 690 lb (313 kg) to 705.5 lb (320 kg), depending on model year.
Harley-Davidson Softail 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 Softail Fat Boy Special?
wet weight
Using a model-level wet weight comparison, the Harley-Davidson Softail Fat Boy Special is heavier than about 84.8% of 168 Harley-Davidson custom/cruiser 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 Softail Fat Boy Special weight & related specs
| Model years covered | 2013, 2015, 2016 |
|---|---|
| Wet / running weight | 727.5 lb (330 kg) to 734.1 lb (333 kg) |
| Dry weight | 690 lb (313 kg) to 705.5 lb (320 kg) |
| Engine displacement | 1,690 cc |
| Power | 77.8 hp |
| Torque | 97.4 lb-ft (132 Nm) to 98.8 lb-ft (134 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 2013 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
| Horsepower per 100 lb | 10.6 hp / 100 lb |
|---|---|
| Pounds per horsepower | 9.44 lb / hp |
| Torque per 100 lb | 13.26 lb-ft / 100 lb to 13.58 lb-ft / 100 lb |
| Displacement per pound | 2.3 cc / lb to 2.32 cc / lb |
| Weight per 100 cc | 43 lb / 100 cc to 43.4 lb / 100 cc |
| Fuel weight as % of bike weight | 4.2% to 4.3% |
| Weight with full tank | 721.1 lb (327.1 kg) to 736.5 lb (334.1 kg) |
What the weight numbers tell you
Harley-Davidson Softail Fat Boy Special weight FAQ
What does the Harley-Davidson Softail Fat Boy Special weigh ready to ride?
The supplied figures span 727.5 lb (330 kg) to 734.1 lb (333 kg) for wet/running weight and 690 lb (313 kg) to 705.5 lb (320 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 Softail Fat Boy Special heavy compared with other Harley-Davidson custom/cruiser motorcycles?
Relatively speaking, it is on the heavier side. The model sits near the 85th weight percentile in its Harley-Davidson category, so it is heavier than most of the compatible comparison set.
Does the Harley-Davidson Softail 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 Softail 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 Softail Fat Boy Special with an average-size rider?
A 180 lb rider brings the simple bike-plus-rider total to roughly 911.9 lb (413.6 kg) using the representative wet/running figure. Gear and luggage would add more.
How much horsepower does the Harley-Davidson Softail Fat Boy Special have per 100 lb?
Where compatible power and weight figures are available, it works out to 10.6 hp per 100 lb. That places it around the 61st percentile within the compatible Harley-Davidson custom / cruiser power-to-weight comparison.
How much heavier is the Harley-Davidson Softail Fat Boy Special with a full tank?
Using the listed dry weight plus the calculated fuel mass, the estimated weight with a full tank is 721.1 lb (327.1 kg) to 736.5 lb (334.1 kg). That still may not equal official curb weight because dry-weight definitions can exclude other fluids or equipment.
What is the Harley-Davidson Softail Fat Boy Special dry-to-wet weight difference?
The supplied model-year data shows roughly 28.7 lb (13 kg) to 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.
What is the Harley-Davidson Softail Fat Boy Special torque per 100 lb of bike weight?
The calculated torque-to-weight range is 13.26 lb-ft per 100 lb to 13.58 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.