Yamaha SR 500 (1980-83) vs Yamaha TZR 250SP (1990)
Comparison technical specifications
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| Make: | Yamaha | Yamaha |
| Model: | SR 500 | TZR 250SP |
| Years: | 1980-83 | 1990 |
| Engine: | Four stroke, single cylinder, SOHC, 2 valves per cylinder. | Two stroke, parallel twin cylinders, read valve, |
| Capacity: | 499 cc / 30.4 cu-in | 249 cc / 15.2 cu-in |
| Bore x Stroke: | 87 х 84 mm | 56.4 x 50 mm |
| Cooling System: | Air cooled | Liquid cooled |
| Compression Ratio: | 9.0:1 | 5.9:1 |
| Induction: | 34mm Mikuni VM34SS carburetor | 2x Mikuni TM28SS carburetor |
| Ignition: | CDI | CDI |
| Starting: | Kick | Kick |
| Max Power: | 31.5 hp / 23.5 kW @ 6500 rpm | 50 hp / 36.4 kW @ 10000 rpm |
| Max Torque: | 36.3 Nm / 26.8 lb-ft @ 5500 rpm | 35.5 Nm / 26.2 lb-ft @ 9750 rpm |
| Transmission: | 5 Speed | 6 speed |
| Final Drive: | Chain | Chain |
| Front Suspension: | 35mm telescopic forks | Telescopic fork adjustable preload |
| Front Wheel Travel: | 150 mm / 5.9 in | 140 mm / 5.5 in |
| Rear Suspension: | Dual shock, 5-way adjustable spring preload. | Coil and gas spring preload 9-way preload position |
| Rear Wheel Travel: | 105 mm / 4.1 in | 100 m / 3.9 in |
| Front Brakes: | Single 200mm disc | Single 320mm discs 2 piston calipers |
| Rear Brakes: | 150mm drum | Single 210mm disc 1 piston caliper |
| Front Tyre: | 3.50 S19 | 100/80-17 |
| Rear Tyre: | 4.00 S18 | 120/80-17 |
| Dimensions: | Width 845 mm / 33.3 in Height 1155 mm / 45.5 in | Length 2005 mm / 78.9 in Width 660 mm / 25.9 in |
| Wheelbase: | 1405 mm / 55.3 in | 1375 mm / 54.1 in |
| Seat Height: | 810 mm / 32 in | 760 mm / 29.9in |
| Dry Weight: | 158 kg / 348 lbs | 128 kg / 282.1 lbs |
| Wet Weight: | 173 kg / 381.4 lbs | 140 kg / 308.6 lbs |
| Fuel Capacity: | 12 Litres / 3.1 US gal | 16 liters / 4.2 US gal |