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← Harley-Davidson
Touring · 1948

Model FL

US$ 650. MSRP depends on country, taxes, accessories, etc.
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MotoLibrary Score
50 /100 Balanced
Power/Weight
0.2 hp/kg
Top Speed
161 km/h
Engine
1212 ccm

1948 Harley-Davidson Model FL Technical Analysis & Specification Breakdown

Engineered by Harley-Davidson for the touring motorcycle segment, the 1948 Harley-Davidson Model FL relies on a 1212 cc (74 cu in) air-cooled v2, four-stroke powerplant. In factory specification, peak output is rated at 50 HP (36.5 kW) at 4,800 rpm, transferring power to the rear wheel through a 4-speed gearbox and chain final drive. With a specific output of 41.3 HP per liter, the engine character is prioritizing low-RPM tractability, mechanical longevity and relaxed throttle response over peak redline numbers.

On the scales, the Model FL measures 256 kg (564 lbs) dry, translating to a power-to-weight ratio of 0.2 HP/kg (5.12 kg per horsepower). Rider ergonomics and chassis geometry center around a 1,510 mm (59.4 in) wheelbase engineered for balanced agility and highway composure. The 14.19-liter (3.7 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 161 km/h (100 mph).

Specific Output
41.3 HP/L
Power-to-Weight
0.2 HP/kg (5.12 kg/HP)
Engine
Displacement 1212.0 ccm (73.96 cubic inches)
Engine Type V2, four-stroke
Engine Details Knucklehead V-twin engine
Power 50.0 HP (36.5 kW)) @ 4800 RPM
Compression 7.0:1
Bore x Stroke 87.0 x 102.0 mm (3.4 x 4.0 inches)
Fuel System Carburettor
Fuel Control Overhead Valves (OHV)
Cooling Air
Transmission
Gearbox 4-speed
Final Drive Chain (final drive)
Performance
Top Speed 160.9 km/h (100.0 mph)
Chassis
Frame Type Steel double downtube
Front Suspension Hydraulic telescopic forks
Rear Suspension Hardtail
Wheelbase 1510 mm (59.4 inches)
Wheels & Brakes
Front Tyre 5.00-16
Rear Tyre 5.00-16
Front Brakes Expanding brake (drum brake)
Rear Brakes Expanding brake (drum brake)
Wheels Wire spoked
Dimensions & Weight
Dry Weight 256.0 kg (564.4 pounds)
Power/Weight 0.1953 HP/kg
Fuel Capacity 14.19 litres (3.75 US gallons)
Oil Capacity 3.80 litres (4.02 US quarts)
Other
Color Options Black, red, azure blue
Electrical 6 Volt battery.
More from Harley-Davidson
Buying Checklist

Before You Compare This Bike

Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.

Power
Compare engine output with similar motorcycles if acceleration, highway use or two-up riding matters.
Weight
Compare weight carefully because it affects low-speed handling, parking and confidence.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
Rider Profile

Who Is This Bike For?

🟡
Intermediate
Requires some riding experience.
🗺️
Best For
Long Distance Touring
⚖️
Handling
Heavy bike — requires confident handling
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