| YAMAHA IT 425 | APRILIA RS 457 |
|---|
| engine specs | |
| Type | |
|---|---|
| Two stroke, single cylinder, read valve, air cooled | liquid-cooled twin-cylinder engine with dual camshaft timing and four valves per cylinder |
| Displacement | |
| 425 cm3 | - |
| Bore X Stroke | |
| 3.3x3.0 in OR 84 mm | - |
| Compression Ratio | |
| 7.3:1 | - |
| Horsepower | |
| 36.9/6000 KW(hp)/RPM | 48/- KW(hp)/RPM |
| Torque | |
| 31/5500 lb-ft/RPM OR 42/5500 Nm/RPM | - |
| Fuel System | |
| 38mm VM38SS Mikuni carburetor | - |
| transmission specs | |
| Gearbox | |
|---|---|
| 5-Speed | - |
| Clutch | |
| Wet multi-discs | - |
| Final Drive | |
| Chain | - |
| chassis specs | |
| Frame | |
|---|---|
| - | Aluminium frame |
| Front Suspension | |
| 43mm Telescopic adjustable forks, 300mm wheel trave | - |
| Rear Suspension | |
| Mono shock, adjustable spring preload and rebound damping, 300mm wheel travel | - |
| Front Brake | |
| Drum | - |
| Rear Brake | |
| Drum | - |
| dimension specs | |
| Ground Clearance | |
|---|---|
| 11.2 in OR 284 mm | - |
| Weight | |
| 269 lbs OR 122 kg | 351 lbs OR 159 kg |
| Fuel Capacity | |
| 3.6 gallons OR 13.6 L | - |
| Wheelbase | |
| 56.3 in OR 1430 mm | - |
| tyres specs | |
| Front | |
|---|---|
| 3.00 -21 | - |
| Rear | |
| 150/80 -18 | - |
