BSA A 50 Cyclone/Royal Star | APRILIA RS 457 |
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engine specs | |
Type | |
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air-cooled, four-stroke, twin cylinder | liquid-cooled twin-cylinder engine with dual camshaft timing and four valves per cylinder |
Displacement | |
498 cm3 | - |
Bore X Stroke | |
2.6x2.9 in OR 66 mm | - |
Compression Ratio | |
9.0:1 | - |
Horsepower | |
33/5800 KW(hp)/RPM | 48/- KW(hp)/RPM |
Fuel System | |
dual carburetors | - |
transmission specs | |
Gearbox | |
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4-speed, manual | - |
Clutch | |
multi-plate | - |
Final Drive | |
chain | - |
chassis specs | |
Frame | |
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steel | Aluminium frame |
Front Suspension | |
telescopic fork | - |
Rear Suspension | |
dual shocks | - |
Front Brake | |
drum | - |
Rear Brake | |
drum | - |
dimension specs | |
Overall Length | |
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82.7 in OR 2101 mm | - |
Seat Height | |
33.1 in OR 841 mm | - |
Weelbase | |
54.8 in OR 1392 mm | - |
Weight | |
311 lbs OR 141 kg | 351 lbs OR 159 kg |
Fuel Capacity | |
4.8 gallons OR 18.2 L | - |
Wheelbase | |
54.8 in OR 1392 mm | - |
tyres specs | |
Front | |
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3.25 x 19 | - |
Rear | |
4.00 x 18 | - |