| TECHNICAL SPECIFICATION |
|---|
| Model ID |
|---|
| Manufacturer (Make) | Yamaha |
| Model Name | RD 400 |
| Year | 1978 |
| Category(class) | Classic |
| Engine |
|---|
| Engine Capacity (Displacement) | 399 ccm (24.35 cubic inches) |
| Engine Type | Twin |
| Bore x Stroke | Ø64.0 mm x 62.0 mm (Ø2.52 inches x 2.44 inches) |
| Bore/Stroke Ratio | 1.03 |
| Stroke | 2 |
| Timing System | MEMBRANE |
| Cooling System | Air |
| Powertrain |
|---|
| Gearbox | 6 speed |
| Chassis/Suspension/Brakes |
|---|
| Front Brakes | Single disc |
| Rear Brakes | Single disc |
| Front Tire | 3.00-18 |
| Rear Tire | 3.50-18 |
| Dimensions |
|---|
| Curb Weight | 175 kg (386 lb) |
| Fuel Capacity | 16.5 litres (4.36 gallons) |
| Performance |
|---|
| Max Power | 43.00 HP (31.4 kW) at 7500 RPM |
| Power/Weight Ratio | 0.25 Hp/Kg |
| Top Speed | 175 km/h (109mph) |
| Acceleration (dart, speedup) time | |
| 0-100 km/h | 5.5 seconds |
| 0-60 mph | 5.3 seconds |
| 1/4 mile | - |
| 60 to 140 km/h, highest gear | - |
