For the 1957 model year, the Harley-Davidson Sportster XL Ironhead motorcycle has a listed dry weight of 494.9 lb (224.5 kg).
Harley-Davidson Sportster XL Ironhead weight overview
This is firmly on the heavier side. The real penalty is not necessarily normal riding; it is low-speed work, awkward parking and moving the bike around manually. The comparison uses dry weight because a usable wet/running figure was not supplied, so the actual ready-to-ride motorcycle will be heavier.
Heavy Motorcycle
How heavy is the Harley-Davidson Sportster XL Ironhead?
dry weight
Using a model-level dry weight comparison, the Harley-Davidson Sportster XL Ironhead is heavier than about 94.4% of 9 Harley-Davidson sport bikes with compatible weight data.
Dry weight
Bike + rider total weight
These totals use the model’s representative dry weight. They exclude riding gear, luggage and a passenger.
Harley-Davidson Sportster XL Ironhead weight & related specs
| Model years covered | 1957 |
|---|---|
| Dry weight | 494.9 lb (224.5 kg) |
| Engine displacement | 883 cc |
| Power | 40 hp |
| Fuel capacity | 4.39 US gal (16.6 L) |
| Full-tank fuel weight (estimated) | 27.3 lb (12.4 kg) |
Useful weight calculations
| Horsepower per 100 lb | 8.08 hp / 100 lb |
|---|---|
| Pounds per horsepower | 12.37 lb / hp |
| Displacement per pound | 1.78 cc / lb |
| Weight per 100 cc | 56.1 lb / 100 cc |
| Fuel weight as % of bike weight | 5.5% |
| Weight with full tank | 522.2 lb (236.9 kg) |
What the weight numbers tell you
Harley-Davidson Sportster XL Ironhead weight FAQ
How heavy is the Harley-Davidson Sportster XL Ironhead?
Listed dry weight is 494.9 lb (224.5 kg). Because no usable wet/running figure was supplied, treat that as a lower starting point rather than the exact on-road weight.
Is the Harley-Davidson Sportster XL Ironhead heavy compared with other Harley-Davidson sport bikes?
Relatively speaking, it is on the heavier side. The model sits near the 94th weight percentile in its Harley-Davidson category, so it is heavier than most of the compatible comparison set.
How much does the Harley-Davidson Sportster XL Ironhead fuel weigh?
The listed tank capacity is 4.39 US gal (16.6 L). Using approximately 0.745 kg/L gasoline, a full tank is roughly 27.3 lb (12.4 kg). That is an estimate for fuel mass, not an official Harley-Davidson curb-weight calculation.
How heavy is the Harley-Davidson Sportster XL Ironhead with an average-size rider?
A 180 lb rider brings the simple bike-plus-rider total to roughly 674.9 lb (306.1 kg) using the representative dry figure. Gear and luggage would add more.
How much horsepower does the Harley-Davidson Sportster XL Ironhead have per 100 lb?
Where compatible power and weight figures are available, it works out to 8.08 hp per 100 lb.
Can I treat the Harley-Davidson Sportster XL Ironhead dry weight as curb weight?
No. The usable figure is dry weight, so it excludes at least some operating fluids. Dry weight plus the estimated full fuel load is about 522.2 lb (236.9 kg), and oil/coolant or definition differences may add more.
What is the Harley-Davidson Sportster XL Ironhead full-tank weight estimate?
Using the listed dry weight plus the calculated fuel mass, the estimated weight with a full tank is 522.2 lb (236.9 kg). That still may not equal official curb weight because dry-weight definitions can exclude other fluids or equipment.
How many cc does the Harley-Davidson Sportster XL Ironhead have per pound?
Engine displacement relative to bike weight is 1.78 cc per lb. It can help compare motorcycles from very different displacement classes without relying on cc alone.
How does the Harley-Davidson Sportster XL Ironhead compare with the median Harley-Davidson sport bike weight?
The model sits about 129 lb (58.5 kg) heavier than the compatible median Harley-Davidson sport bike weight used on this page.
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.