| BMW R 90/6 | APRILIA RS 457 |
|---|
| engine specs | |
| Type | |
|---|---|
| air-cooled, four-stroke, two cylinder boxer, 2 valves per cylinder | liquid-cooled twin-cylinder engine with dual camshaft timing and four valves per cylinder |
| Displacement | |
| 898 cm3 | - |
| Bore X Stroke | |
| 3.5x2.8 in OR 89 mm | - |
| Compression Ratio | |
| 9.0:1 | - |
| Horsepower | |
| 60/6500 KW(hp)/RPM | 48/- KW(hp)/RPM |
| Torque | |
| 54/5500 lb-ft/RPM OR 73/5500 Nm/RPM | - |
| Fuel System | |
| 2xBing carburetors | - |
| transmission specs | |
| Gearbox | |
|---|---|
| 5-speed, manual | - |
| Clutch | |
| dry, single plate, diaphragm spring | - |
| Final Drive | |
| shaft | - |
| chassis specs | |
| Frame | |
|---|---|
| steel | Aluminium frame |
| Front Suspension | |
| telescopic hydraulic fork | - |
| Rear Suspension | |
| dual adjustable shocks | - |
| Front Brake | |
| single 260mm disc, 1-piston caliper | - |
| Rear Brake | |
| 200mm drum | - |
| dimension specs | |
| Overall Length | |
|---|---|
| 85.8 in OR 2179 mm | - |
| Overall Width | |
| 29.1 in OR 739 mm | - |
| Seat Height | |
| 31.9 in OR 810 mm | - |
| Ground Clearance | |
| 6.4 in OR 163 mm | - |
| Weight | |
| 463 lbs OR 210 kg | 351 lbs OR 159 kg |
| Fuel Capacity | |
| 4.8 gallons OR 18.2 L | - |
| Wheelbase | |
| 57.6 in OR 1463 mm | - |
| tyres specs | |
| Front | |
|---|---|
| 3.25 - H19 | - |
| Rear | |
| 4.00 - H18 | - |
