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Aprilia RS4 50 - 2013 Specifications and Reviews

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Replacement for the: 2011 Aprilia RS50

About the Aprilia RS4 50

Launched in 2011, the two stroke RS4 50 replaced the outgoing 2011 Aprilia RS50. It is also the little brother to the Aprilia RS4 125.

Styled on the RSV4 superbike.

Engine and Transmission Specifications

Emission detailsEuro 2
DrivelineChain, 11/53. Primary drive: Gears, 21/78.
ClutchMultiplate wet clutch
Transmission type,final driveChain
Gearbox6-speed
Cooling systemLiquid
Lubrication systemAutomatic mixer
IgnitionElectronic with CDI capacity discharge
Fuel systemCarburettor
Bore x stroke39.9 x 39.9 mm (1.6 x 1.6 inches)
Compression11.5:1
Engine typeSingle cylinder, two-stroke
Capacity:49.90 ccm (3.04 cubic inches)
 
 

CategorySport
Year2013
ModelAprilia RS4 50
 
 

Brakes, suspension, Frame and wheels

WheelsLight alloy with 6 split spokes, with sealing profile for tubeless tyres; front: 2.75 x 17in.; rear: 3.50 x 17in.
Rear brakes diameter218 mm (8.6 inches)
Rear brakesSingle disc
Front brakes diameter300 mm (11.8 inches)
Front brakesSingle disc. radial 4 piston calliper
Rear tyre dimensions130/70-17
Front tyre dimensions100/80-17
Rear suspensionAsymmetric swingarm with monoshock, wheel travel 130 mm
Front suspension41 mm upside down fork, wheel travel 110 mm

Physical measures and capacities

Reserve fuel capacity3.50 litres (0.92 gallons)
Fuel capacity14.50 litres (3.83 gallons)
Wheelbase1,350 mm (53.1 inches)
Overall width740 mm (29.1 inches)
Overall length1,953 mm (76.9 inches)
Overall height1,138 mm (44.8 inches)
Seat height820 mm (32.3 inches) If adjustable, lowest setting.

Other specs

Color optionsRacing white, Racing black
StarterElectric

Rider Reviews

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