| Attribute | Harley-Davidson Model J 1926 × | Harley-Davidson Model J 1925 × |
|---|---|---|
| General | ||
| Production from (year) | 1926 | 1925 |
| Make | Harley-Davidson | Harley-Davidson |
| Model | Harley-Davidson Model J | Harley-Davidson Model J |
| Category | Allround | Allround |
| Engine and transmission | ||
| Engine type | V2, four-stroke | V2, four-stroke |
| Fuel system | Carburettor | Carburettor |
| Displacement (cm³) | 989 | 989 |
| Transmission type,final drive | Chain | Chain |
| Bore (mm) | 84.1 | 84.1 |
| Stroke (mm) | 88.9 | 88.9 |
| Ignition | H.D generator | H.D generator |
| Chassis | ||
| Rear brakes | Expanding brake (drum brake) | Expanding brake (drum brake) |
| Front tyre | 3-26 | 3-26 |
| Rear tyre | 3-26 | 3-26 |
| Seat | Single | Single |
| Wheels | Spoked | Spoked |
| Dimensions | ||
| Dry weight (kg) | 190 | 190 |
| Performance | ||
| Top speed (km/h) | 136 | 136 |