Aprilia RX 50 - 2011 Specifications and Reviews

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About the Aprilia RX 50

Powered by a Euro 2 compliant liquid cooled 49.9cc single cylinder two stroke engine, producing about 6 bhp. RRP the RX50 was introduced in 2006.

The engine itself weighs just 15kg and by just including a kick start Aprilia shaved even more off.

The Aprilia SX50 is essentially the same bike but with 17" wheels, road going tyres, a larger 300mm front disc and a 50mm lower seat. Both bikes can be limited for 16 year olds or derestricted to unlock the 50mph top speed.

The wire-spoked 21" front wheel takes a 90/90 tyre and the rear 18" a 110/80.

Engine and Transmission Specifications

Exhaust systemCatalytic converter
DrivelinePrimary drive: Gears. Ratio: 21/78. Final drive: Chain. Ratio: 11/53
Transmission type,final driveChain
Cooling systemLiquid
Lubrication systemAutomatic mixer
IgnitionElectronic C.D.I
Fuel systemCarburettor. DELLORTO PVHA 17.5
Bore x stroke39.9 x 40.0 mm (1.6 x 1.6 inches)
Engine detailsLight alloy cylinder
Engine typeSingle cylinder, two-stroke
Capacity:49.90 ccm (3.04 cubic inches)

CategoryEnduro / offroad
ModelAprilia RX 50

Brakes, suspension, Frame and wheels

WheelsSpoked wheels with aluminium rim
Rear brakes diameter180 mm (7.1 inches)
Rear brakesSingle disc
Front brakes diameter300 mm (11.8 inches)
Front brakesSingle disc
Rear tyre dimensions110/80-18
Front tyre dimensions90/90-21
Rear suspension travel180 mm (7.1 inches)
Rear suspensionHigh strength steel swingarm
Front suspension travel195 mm (7.7 inches)
Front suspension40 mm hydraulic fork with leading axle.
Frame typeSteel beam

Physical measures and capacities

Fuel capacity7.00 litres (1.85 gallons)
Wheelbase1,406 mm (55.4 inches)
Overall length2,045 mm (80.5 inches)
Seat height830 mm (32.7 inches) If adjustable, lowest setting.

Other specs

CommentsRacing driver and race car manufacturer Dan Gurney is the inventor of the Alligator motorcycle.
Wheelbase1,524 mm (60.0 inches)
Dry weight145.2 kg (320.0 pounds)
Rear wheel travel114 mm (4.5 inches)
Rear SuspensionDual Shock absorbers
Front wheel travel109 mm (4.3 inches)
Front Suspension43mm inverted cartridge fork
0-100 km/h (0-62 mph)3.100 seconds
Top speed225.3 km/h (140.0 mph)
Capacity:710.00 ccm (43.32 cubic inches)
ModelAlligator A-6
Color optionsWhite

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