| YAMAHA YR1 | APRILIA RS 457 |
|---|
| engine specs | |
| Type | |
|---|---|
| Twin cylinder, two stroke, air cooled | liquid-cooled twin-cylinder engine with dual camshaft timing and four valves per cylinder |
| Displacement | |
| 347 cm3 | - |
| Bore X Stroke | |
| 2.4x2.3 in OR 61 mm | - |
| Compression Ratio | |
| 7.5:1 | - |
| Horsepower | |
| 36.5/7500 KW(hp)/RPM | 48/- KW(hp)/RPM |
| Torque | |
| 23.9/7000 lb-ft/RPM OR 32/7000 Nm/RPM | - |
| Fuel System | |
| Carburetor | - |
| transmission specs | |
| Gearbox | |
|---|---|
| 5-Speed | - |
| Clutch | |
| Wet multi-plate | - |
| Final Drive | |
| Chain | - |
| chassis specs | |
| Frame | |
|---|---|
| - | Aluminium frame |
| Front Brake | |
| Drum | - |
| Rear Brake | |
| Drum | - |
| dimension specs | |
| Overall Length | |
|---|---|
| 81.1 in OR 2060 mm | - |
| Overall Width | |
| 28.9 in OR 734 mm | - |
| Ground Clearance | |
| 5.7 in OR 145 mm | - |
| Weight | |
| 346 lbs OR 157 kg | 351 lbs OR 159 kg |
| Fuel Capacity | |
| 4 gallons OR 15.1 L | - |
| Wheelbase | |
| 52.6 in OR 1336 mm | - |
| tyres specs | |
| Front | |
|---|---|
| 3.00-18 | - |
| Rear | |
| 3.50-18 | - |
