| YAMAHA YZ250 | APRILIA RS 457 |
|---|
| engine specs | |
| Type | |
|---|---|
| 2-stroke, liquid-cooled, reed-valve, single | liquid-cooled twin-cylinder engine with dual camshaft timing and four valves per cylinder |
| Displacement | |
| 249 cm3 | - |
| Bore X Stroke | |
| 2.6x2.8 in OR 66 mm | - |
| Compression Ratio | |
| 9.1 – 10.9:1 | - |
| Horsepower | |
| - | 48/- KW(hp)/RPM |
| Torque | |
| 35/7500 lb-ft/RPM OR 47/7500 Nm/RPM | - |
| Fuel System | |
| Keihin PWK38S | - |
| transmission specs | |
| Gearbox | |
|---|---|
| 5 speed, manual | - |
| Clutch | |
| Multiplate wet clutch | - |
| Final Drive | |
| O-ring chain | - |
| chassis specs | |
| Frame | |
|---|---|
| Aluminium semi-double-cradle | Aluminium frame |
| Front Suspension | |
| 48mm Kayaba inverted cartridge fork | - |
| Rear Suspension | |
| Kayaba single shock, adjustable | - |
| Front Brake | |
| 250mm floating disc | - |
| Rear Brake | |
| 245mm disc | - |
| dimension specs | |
| Overall Length | |
|---|---|
| 86.1 in OR 2187 mm | - |
| Overall Width | |
| 32.6 in OR 828 mm | - |
| Seat Height | |
| 39.1 in OR 993 mm | - |
| Ground Clearance | |
| 15.2 in OR 386 mm | - |
| Weight | |
| 211 lbs OR 96 kg | 351 lbs OR 159 kg |
| Fuel Capacity | |
| 2.1 gallons OR 7.9 L | - |
| Wheelbase | |
| 58.5 in OR 1486 mm | - |
| tyres specs | |
| Front | |
|---|---|
| 80/100-21 | - |
| Rear | |
| 110/90-19 | - |
