Yamaha SR 250 (1978-79)
Comparison technical specifications
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| Make: | Yamaha |
| Model: | SR 250 |
| Years: | 1978-79 |
| Engine: | Four stroke, single cylinder, SOHC, 2 valve |
| Capacity: | 239 cc / 15.2 cu-in |
| Bore x Stroke: | 73.5 x 56.5 mm |
| Cooling System: | Air cooled |
| Compression Ratio: | 8.9:1 |
| Induction: | 34mm Mikuni carburettor |
| Ignition: | Electronically |
| Starting: | Electric |
| Max Power: | 21 hp / 15.7 kW @ 7700 rpm |
| Max Torque: | 18.7 ft-lb / T25.5 Nm @ 7000 rpm |
| Transmission: | 5 Speed |
| Final Drive: | Chain |
| Front Suspension: | 32mm Telescopic forks |
| Rear Suspension: | Dual shock 5-way preload adjustment. |
| Front Brakes: | Drum |
| Rear Brakes: | Drum |
| Front Tyre: | 3.00-18 |
| Rear Tyre: | 120/90-16 |
| Wheelbase: | 1340 mm / 52.75 in |
| Seat Height: | 740 mm / 29.0 in |
| Wet Weight: | 130 kg 287 lbs |
| Fuel Capacity: | 10.8 Litres / 2.7 US gal |
| Consumption Average: | 70 mpg |
| Standing ¼ Mile: | 16.3 sec |
| Top Speed: | 89 mph / 143.2 km/h |