| ATK 250 | APRILIA RS 457 |
|---|
| engine specs | |
| Type | |
|---|---|
| liquid-cooled, two-stroke, Rotax single cylinder | liquid-cooled twin-cylinder engine with dual camshaft timing and four valves per cylinder |
| Displacement | |
| 249 cm3 | - |
| Bore X Stroke | |
| 2.7x2.8 in OR 69 mm | - |
| Compression Ratio | |
| 7:1 | - |
| Horsepower | |
| - | 48/- KW(hp)/RPM |
| Fuel System | |
| 38mm Mikuni TMS carburetor | - |
| transmission specs | |
| Gearbox | |
|---|---|
| 6-speed, manual | - |
| Clutch | |
| wet multi-disc, manual | - |
| Final Drive | |
| chain | - |
| chassis specs | |
| Frame | |
|---|---|
| steel | Aluminium frame |
| Front Suspension | |
| 46mm Paioli telescopic fork | - |
| Rear Suspension | |
| Ohlins adjustable monoshock | - |
| Front Brake | |
| single 260mm disc, 2-piston caliper | - |
| Rear Brake | |
| single 220mm disc, 1-piston caliper | - |
| dimension specs | |
| Seat Height | |
|---|---|
| 37.2 in OR 945 mm | - |
| Weight | |
| 236 lbs OR 107 kg | 351 lbs OR 159 kg |
| Fuel Capacity | |
| 3.7 gallons OR 14.0 L | - |
| Wheelbase | |
| 58.5 in OR 1486 mm | - |
| tyres specs | |
| Front | |
|---|---|
| 80/100-21 | - |
| Rear | |
| 100/100-18 | - |
