| OSSA TR 250I | APRILIA RS 457 |
|---|
| engine specs | |
| Type | |
|---|---|
| Two-stroke single cylinder inverted admission direct reed crankcase | liquid-cooled twin-cylinder engine with dual camshaft timing and four valves per cylinder |
| Displacement | |
| 249.2 cm3 | - |
| Bore X Stroke | |
| 2.8x2.4 in OR 71 mm | - |
| Horsepower | |
| - | 48/- KW(hp)/RPM |
| Fuel System | |
| EFI Kokusan Batery-less System | - |
| transmission specs | |
| Gearbox | |
|---|---|
| 6-Speed | - |
| Clutch | |
| Hydraulic | - |
| Primary Drive | |
| Gears | - |
| Final Drive | |
| Chain | - |
| chassis specs | |
| Frame | |
|---|---|
| Tubular profile CR-Mo steel with pipe of aluminium and forged aluminum lower | Aluminium frame |
| Front Suspension | |
| Fork with aluminum bars, 40 mm diameter Marzocchi adjustable compression and rebound | - |
| Rear Suspension | |
| Variable progressive system with shock absorber Öhlins TTX adjustable compression and rebound | - |
| Front Brake | |
| Single disc diameter 185 mm 4-piston caliper | - |
| Rear Brake | |
| Single disc diameter 150 mm 2-piston caliper | - |
| dimension specs | |
| Seat Height | |
|---|---|
| 25.8 in OR 655 mm | - |
| Ground Clearance | |
| 13.4 in OR 340 mm | - |
| Weight | |
| 151 lbs OR 68 kg | 351 lbs OR 159 kg |
| Fuel Capacity | |
| 0.7 gallons OR 2.6 L | - |
| Wheelbase | |
| 52.3 in OR 1328 mm | - |
| tyres specs | |
| Front | |
|---|---|
| 2.75 x21 | - |
| Rear | |
| 4.00 x18 | - |
