| YAMAHA XS-1 | APRILIA RS 457 |
|---|
| engine specs | |
| Type | |
|---|---|
| Air Cooled, Four Stroke, Parallel Twin Cylinder, SOHC, 2 Valves Per Cylinder | liquid-cooled twin-cylinder engine with dual camshaft timing and four valves per cylinder |
| Displacement | |
| 343 cm3 | - |
| Bore X Stroke | |
| 2.9x2.9 in OR 74 mm | - |
| Compression Ratio | |
| 8.4:1 | - |
| Horsepower | |
| 53/7200 KW(hp)/RPM | 48/- KW(hp)/RPM |
| Torque | |
| 39.8/6800 lb-ft/RPM OR 54/6800 Nm/RPM | - |
| Fuel System | |
| 2xMikuni Carburetors | - |
| transmission specs | |
| Gearbox | |
|---|---|
| 5 Speed | - |
| Final Drive | |
| Chain | - |
| chassis specs | |
| Frame | |
|---|---|
| - | Aluminium frame |
| Front Suspension | |
| Telescopic Forks | - |
| Rear Suspension | |
| Dual Shock Absorbers | - |
| Front Brake | |
| Drum | - |
| Rear Brake | |
| Drum | - |
| dimension specs | |
| Weight | |
|---|---|
| - | 351 lbs OR 159 kg |
| tyres specs | |
| Front | |
|---|---|
| 3.50-19 | - |
| Rear | |
| 4.00-18 | - |
