The Harley-Davidson Model D motorcycle specifications include a 742.6 cc (45.31 cu in) engine and a 3-speed gearbox.
Key specifications
How the Harley-Davidson Model D 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 42% lower than the Harley-Davidson database average. Around the 9th 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.
743 cc — larger displacement than about 9% of Harley-Davidson models.
Mechanical overview
Additional useful specifications
| Front tire size | 3-26 |
|---|---|
| Rear tire size | 3-26 |
| Bore/stroke ratio | 0.72:1 (Undersquare) |
Model information
| Year released | 1929 |
|---|---|
| Category | Sport |
Engine specifications
| Engine type | V2, four-stroke |
|---|---|
| Displacement | 742.6 cc (45.31 cu in) |
| Bore × stroke | 69.8 x 96.8 mm (2.7 x 3.8 inches) |
| Compression ratio | 7.5:1 |
| Fuel system | Carburettor |
| Fuel control | Sidevalves |
Transmission and drivetrain
| Gearbox | 3-speed |
|---|---|
| Final drive | Chain (final drive) |
Brakes, wheels and tires
| Front tire | 3-26 |
|---|---|
| Rear tire | 3-26 |
| Wheels | Spoked |
Other specifications
| Seat | Solo seat with springs |
|---|
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.