BSA A 50 Cyclone/Royal Star APRILIA RS 457
engine specs
Type
air-cooled, four-stroke, twin cylinderliquid-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)/RPM48/- KW(hp)/RPM
Fuel System
dual carburetors-
transmission specs
Gearbox
4-speed, manual-
Clutch
multi-plate-
Final Drive
chain-
chassis specs
Frame
steelAluminium frame
Front Suspension
telescopic fork-
Rear Suspension
dual shocks-
Front Brake
drum-
Rear Brake
drum-
dimension specs
Overall Length
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 kg351 lbs OR 159 kg
Fuel Capacity
4.8 gallons OR 18.2 L-
Wheelbase
54.8 in OR 1392 mm-
tyres specs
Front
3.25 x 19-
Rear
4.00 x 18-

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