| TECHNICAL SPECIFICATION |
|---|
| Model ID |
|---|
| Manufacturer (Make) | Yamaha |
| Model Name | SR 250 Special (reduced effect) |
| Year | 1981 |
| Category(class) | Classic |
| Engine |
|---|
| Engine Capacity (Displacement) | 240 ccm (14.65 cubic inches) |
| Engine Type | 1 cylinder |
| Bore x Stroke | Ø73.5 mm x 56.5 mm (Ø2.89 inches x 2.22 inches) |
| Bore/Stroke Ratio | 1.3 |
| Stroke | 4 |
| Valves per Cylinder | 2 |
| Timing System | OHC |
| Cooling System | Air |
| Powertrain |
|---|
| Gearbox | 5 speed |
| Chassis/Suspension/Brakes |
|---|
| Front Brakes | Drum |
| Rear Brakes | Drum |
| Front Tire | 3.00-19 |
| Rear Tire | 120/90-16 |
| Dimensions |
|---|
| Curb Weight | 135 kg (298 lb) |
| Fuel Capacity | 10 litres (2.64 gallons) |
| Performance |
|---|
| Max Power | 17.00 HP (12.4 kW) at 7500 RPM |
| Power/Weight Ratio | 0.13 Hp/Kg |
| Top Speed | 115 km/h (71mph) |
| Acceleration (dart, speedup) time | |
| 0-100 km/h | 12 seconds |
| 0-60 mph | 11.4 seconds |
| 1/4 mile | - |
| 60 to 140 km/h, highest gear | - |
