Built around Aprilia's enduro - offroad motorcycle platform, the 2009 Aprilia RX 50 relies on a 49.9 cc (3 cu in) liquid-cooled single cylinder, two-stroke powerplant. Internal engine geometry specifies a bore and stroke of 39.9 x 40.0 mm (1.6 x 1.6 inches).
Rider ergonomics and chassis geometry center around a 830 mm (32.7 in) seat height — resulting in a taller command-style riding posture suited to medium-to-tall inseams, combined with a 1,406 mm (55.4 in) wheelbase engineered for quick, flickable steering geometry. The 7-liter (1.8 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Aprilia archive, this model family spans 15 indexed model years from 2002 to 2022, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Standover Height
830 mm (32.7 in)
Engine
Displacement49.9 ccm (3.04 cubic inches)
Engine TypeSingle cylinder, two-stroke
Engine DetailsSingle cylinder, two-stroke
Bore x Stroke39.9 x 40.0 mm (1.6 x 1.6 inches)
Fuel SystemCarburettor. DELL’ORTO PVHA 17.5
IgnitionElectronic C.D.I
LubricationAutomatic mixer
CoolingLiquid
Transmission
Gearbox6-speed
ClutchMulti-plate
Chassis
Front Suspension40 mm hydraulic fork with leading axle, wheel travel 195 mm.
Rear SuspensionHigh strength steel swingarm
Wheelbase1406 mm (55.4 inches)
Wheels & Brakes
Front Tyre110/80-17
Rear Tyre130/70-17
Front BrakesSingle disc
Front Brake Ø300 mm (11.8 inches)
Rear BrakesSingle disc
Rear Brake Ø180 mm (7.1 inches)
Dimensions & Weight
Seat Height830 mm (32.7 inches) If adjustable, lowest setting.
Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.
Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
