| BETA 390RS | APRILIA RS 457 |
|---|
| engine specs | |
| Type | |
|---|---|
| single cylinder, 4-valve, 4-stroke liquid cooled | liquid-cooled twin-cylinder engine with dual camshaft timing and four valves per cylinder |
| Displacement | |
| 386 cm3 | - |
| Bore X Stroke | |
| 3.5x2.5 in OR 89 mm | - |
| Compression Ratio | |
| 2.5:1 | - |
| Horsepower | |
| - | 48/- KW(hp)/RPM |
| Fuel System | |
| Keihin FCR-39mm, carburetor | - |
| transmission specs | |
| Gearbox | |
|---|---|
| 6-speed, manual | - |
| Clutch | |
| wet multi-disc, manual | - |
| Final Drive | |
| O-ring chain | - |
| chassis specs | |
| Frame | |
|---|---|
| molybdenum steel with double cradle split above exhaust port | Aluminium frame |
| Front Suspension | |
| 48 mm Sachs USD fork, adjustable compression and rebound, TFX technology | - |
| Rear Suspension | |
| aluminum body Sachs shock w/adjustable rebound and hi/low speed compression | - |
| Front Brake | |
| 260mm rotor | - |
| Rear Brake | |
| 240mm rotor | - |
| dimension specs | |
| Seat Height | |
|---|---|
| 36.6 in OR 930 mm | - |
| Ground Clearance | |
| 12.6 in OR 320 mm | - |
| Weight | |
| 243 lbs OR 110 kg | 351 lbs OR 159 kg |
| Fuel Capacity | |
| 2 gallons OR 7.6 L | - |
| Wheelbase | |
| 58.1 in OR 1476 mm | - |
| tyres specs | |
| Front | |
|---|---|
| Michelin Enduro, 21 | - |
| Rear | |
| Michelin Enduro, 18 | - |
