The Harley-Davidson FLH Duo Glide motorcycle specifications include a 1212.7 cc (74.00 cu in) engine, power of 55 hp (40.1 kW), a 4-speed gearbox, and a listed weight of 267 kg (588.6 lb).
Key specifications
The 1958 model is treated as the standard specification. Only later model years with a different supplied value are shown below.
How the Harley-Davidson FLH Duo Glide compares
This compares the motorcycle with all Harley-Davidson models in this specifications database. The blue marker is this model and the grey line is the Harley-Davidson database average.
About 14% lower than the Harley-Davidson database average. Around the 37th percentile across Harley-Davidson models.
Very close to the Harley-Davidson database average. Around the 40th percentile across Harley-Davidson models.
About 17% smaller than the Harley-Davidson database average. Around the 29th percentile across Harley-Davidson models.
Harley-Davidson database percentile rankings
Percentiles show where this motorcycle sits across the Harley-Davidson specifications database. They are descriptive database rankings, not performance ratings.
55 hp — more powerful than about 37% of Harley-Davidson models with power data.
1,213 cc — larger displacement than about 40% of Harley-Davidson models.
14.2 L — larger than about 29% of Harley-Davidson fuel tanks in this database.
Mechanical overview
Additional useful specifications
| Front tire size | 5.00-15 |
|---|---|
| Rear tire size | 5.00-15 |
| Engine oil capacity | 3.80 L (4.02 US qt) |
| Power-to-weight ratio | 0.206 hp/kg |
| Power-to-weight | 206.0 hp/tonne |
| Specific power | 45.4 hp/L |
| Bore/stroke ratio | 0.85:1 (Undersquare) |
Engine specifications
| Engine type | V2, four-stroke |
|---|---|
| Displacement | 1212.7 cc (74.00 cu in) |
| Power | 55 hp (40.1 kW) |
| Bore × stroke | 87.0 x 102 mm (3.4 x 4.0 inches) |
| Compression ratio | 7.0:1 |
| Cooling system | Air |
| Fuel system | Carburettor |
| Fuel control | Overhead Valves (OHV) |
| Starter | Electric |
| Oil capacity | 3.80 L (4.02 US qt) |
Transmission and drivetrain
| Gearbox | 4-speed |
|---|---|
| Final drive | Chain (final drive) |
Chassis and suspension
| Frame | Steel wishbone |
|---|---|
| Front suspension | Hydraulic telescopic forks |
| Rear suspension | Swingarm. Dual coil-over-shocks. |
Brakes, wheels and tires
| Front brakes | Expanding brake (drum brake) |
|---|---|
| Rear brakes | Expanding brake (drum brake) |
| Front tire | 5.00-15 |
| Rear tire | 5.00-15 |
| Wheels | Wire spoked |
Dimensions and weight
| Dry weight | 267 kg (588.6 lb) |
|---|---|
| Wheelbase | 1,500 mm (59.1 inches) |
Fuel and emissions
| Fuel capacity | 14.19 L (3.75 US gal) |
|---|
Performance
| Power/weight ratio | 0.2060 hp/kg |
|---|
Electrical and instruments
| Electrical | 6 Volt battery. |
|---|
Other specifications
| Color options | Black, red, blue |
|---|---|
| Seat | Solo seat |
| Comments | FLH models have higher compression then FL. |
Disclaimer: Specifications may vary by market, trim, production date and optional equipment, and scraped or historical data can contain errors. Comparison and percentile values are calculated from Harley-Davidson models in this specifications database. Always double-check important specifications against the motorcycle owner’s/service manual and official Harley-Davidson information before relying on them. Visit the official Harley-Davidson website.