Engineered by Aprilia for the enduro - offroad motorcycle segment, the 2021 Aprilia RX 50 Factory pairs a 50 cc (3.1 cu in) liquid-cooled single cylinder, two-stroke architecture with road-focused gearing. Internal engine geometry specifies a bore and stroke of 39.9 x 40.0 mm (1.6 x 1.6 inches) with a 11.5:1 compression ratio.
On the scales, the RX 50 Factory measures 104 kg (229 lbs) wet (curb). Rider ergonomics and chassis geometry center around a 880 mm (34.6 in) seat height — reflecting a long-travel chassis stance that favors ground clearance and off-pavement control, combined with a 1,395 mm (54.9 in) wheelbase engineered for quick, flickable steering geometry. The 7-liter (1.8 US gal) fuel tank paired with a rated consumption of 2.96 L/100 km provides an estimated theoretical range of roughly 236 km (147 miles) between fill-ups.
Within MotoLibrary's Aprilia archive, this model family spans 5 indexed model years from 2018 to 2023, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Theoretical Range
~236 km (147 mi)
Engine
Displacement50.0 ccm (3.05 cubic inches)
Engine TypeSingle cylinder, two-stroke
Engine DetailsLight alloy cylinder
Compression11.5:1
Bore x Stroke39.9 x 40.0 mm (1.6 x 1.6 inches)
Fuel SystemCarburettor. Dell’Orto PHVA 17.5
IgnitionElectronic with CDI capacity discharge
LubricationAutomatic mixer
CoolingLiquid
Transmission
Gearbox6-speed
Final DriveChain (final drive)
ClutchMultiplate wet clutch
Performance
Fuel Consumption2.96 litres/100 km (33.8 km/l or 79.47 mpg)
Greenhouse Gases68.7 CO2 g/km. (CO2 - Carbon dioxide emission)
Emission DetailsEuro 4
Chassis
Frame TypeTwin - tube steel
Front SuspensionUpside down fork with Ø 41 mm stanchions
Front Travel240 mm (9.4 inches)
Rear SuspensionAluminium alloy swingarm, mono shock absorber with progressive link system
Rear Travel200 mm (7.9 inches)
Wheelbase1395 mm (54.9 inches)
Wheels & Brakes
Front Tyre80/90-21
Rear Tyre110/80-18
Front BrakesSingle disc. Stainless steel disc with floating calliper
Front Brake Ø260 mm (10.2 inches)
Rear BrakesSingle disc. Stainless steel disc with floating calliper
Rear Brake Ø220 mm (8.7 inches)
WheelsRadial rims with aluminium channel
Dimensions & Weight
Weight incl.104.0 kg (229.3 pounds)
Seat Height880 mm (34.6 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.
