Across 5 covered model years from 2013 to 2017, the Harley-Davidson Softail Fat Boy Lo motorcycle has supplied wet/running weights ranging from 728 lb (330.2 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 Lo weight overview
This is a very heavy motorcycle. Good footing, sensible parking direction and avoiding awkward slopes make a real difference when handling it at walking speed.
Very Heavy Motorcycle
How heavy is the Harley-Davidson Softail Fat Boy Lo?
wet weight
Using a model-level wet weight comparison, the Harley-Davidson Softail Fat Boy Lo is heavier than about 82.4% 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 Lo weight & related specs
| Model years covered | 2013, 2014, 2015, 2016, 2017 |
|---|---|
| Wet / running weight | 728 lb (330.2 kg) to 734.1 lb (333 kg) |
| Dry weight | 690 lb (313 kg) to 705.5 lb (320 kg) |
| Engine displacement | 1,688 cc |
| Torque | 97.4 lb-ft (132 Nm) to 100.3 lb-ft (136 Nm) |
| Fuel capacity | 5 US gal (18.93 L) |
| Full-tank fuel weight (estimated) | 31.1 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
| Torque per 100 lb | 13.28 lb-ft / 100 lb to 13.66 lb-ft / 100 lb |
|---|---|
| Displacement per pound | 2.3 cc / lb to 2.32 cc / lb |
| Weight per 100 cc | 43.1 lb / 100 cc to 43.5 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 736.6 lb (334.1 kg) |
What the weight numbers tell you
Harley-Davidson Softail Fat Boy Lo weight FAQ
How much does the Harley-Davidson Softail Fat Boy Lo weigh?
For the model years covered here, wet/running weight is 728 lb (330.2 kg) to 734.1 lb (333 kg), while dry weight is 690 lb (313 kg) to 705.5 lb (320 kg). Do not treat dry and wet figures as interchangeable.
How does the Harley-Davidson Softail Fat Boy Lo weight compare with similar Harley-Davidsons?
It is on the heavier side. Its representative wet weight is around the 82nd percentile among 168 compatible Harley-Davidson custom/cruiser motorcycles.
Are all Harley-Davidson Softail Fat Boy Lo model years the same weight?
There are year-to-year differences in the supplied data. The earliest covered year is used as the baseline, with later changed values shown separately above.
What does a full tank of gas weigh on the Harley-Davidson Softail Fat Boy Lo?
A full tank works out to about 31.1 lb (14.1 kg) from the listed 5 US gal (18.93 L) capacity. Actual fuel density varies slightly, so treat it as a practical estimate.
What does the Harley-Davidson Softail Fat Boy Lo weigh with a 180 lb rider?
The approximate combined total is 908 lb (411.8 kg) with a 180 lb rider, based on the representative wet/running weight used on this page.
What does the Harley-Davidson Softail Fat Boy Lo weigh with a full tank?
Based on the available dry-weight and tank-capacity data, a full-tank estimate is 721.1 lb (327.1 kg) to 736.6 lb (334.1 kg). Oil, coolant and market-specific equipment can still make actual ready-to-ride weight different.
What is the difference between Harley-Davidson Softail Fat Boy Lo dry and wet weight?
Available years with both measurements show about 28.7 lb (13 kg) to 37.9 lb (17.2 kg) added between dry and ready-to-ride figures. Fuel explains part of it, while oil, coolant and specification definitions can explain the rest.
How much torque does the Harley-Davidson Softail Fat Boy Lo have per 100 lb?
Available data gives 13.28 lb-ft per 100 lb to 13.66 lb-ft per 100 lb. That ratio helps explain how strong the engine is relative to the bike’s mass, especially at lower speeds.
What is the Harley-Davidson Softail Fat Boy Lo displacement per pound?
The model has about 2.3 cc per lb to 2.32 cc per lb in the available data. This simply shows how much engine displacement there is for each pound of motorcycle weight.
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.