2021 Aprilia SR 50 Factory Specs

motorcycle specs

These are the known mechanical and performance specifications for your 2021 Aprilia SR 50 Factory.

Basic Specs

ModelAprilia SR 50 Factory
Cost Euro 3170


Displacement49.0 ccm (2.99 cubic inches)
TypeHi-Per 2 Pro engine
DetailsSingle cylinder, two-stroke
Bore/Stroke40.0 x 39.3 mm (1.6 x 1.5 inches)
LubricationSeparate mixing with mechanical oil pump


Final Drive
ClutchAutomatic centrifugal dry clutch
DrivelineGears in oil bath final drive


Horespower4.0 HP (2.9 kW) @ 7000 RPM
Torque4.0 Nm (0.4 kgf-m or 3.0 ft.lbs) @ 6500 RPM
Top Speed45.0 km/h (28.0 mph)

Fuel Economy & Polution

Fuel Consumption
Fuel Capacity7.60 litres (2.01 US gallons)


Frame TypeSplit single cradle frame in high tensile strength steel tube
Front SuspensionTelescopic hydraulic fork
Front Travel90 mm (3.5 inches)
Rear SuspensionEngine unit acting as swingarm. Monoshock.
Rear Travel70 mm (2.8 inches)
Seat Height795 mm (31.3 inches) If adjustable, lowest setting.
Alt. Seat Height
Total Height1120 mm (44.1 inches)
Total Length1860 mm (73.2 inches)
Total Width705 mm (27.8 inches)
Ground Clearance
Wheelbase1260 mm (49.6 inches)
Dry Weight107.0 kg (235.9 pounds)
Wet Weight

Wheels & Brakes

Front Tire/Tyre130/60-13
Rear Tire/Tyre130/60-13
Front BrakesSingle disc. 2 opposing pistons
Front Brake Diameter190 mm (7.5 inches)
Rear BrakesSingle disc. 2 opposing pistons
Rear Brake Diameter190 mm (7.5 inches)
WheelsFive spoke, light alloy wheels


It appears you're interested in specifications for the Aprilia SR 50 Factory. This Scooter model is powered by a Hi-Per 2 Pro engine Single cylinder, two-stroke engine with 49.0 ccm (2.99 cubic inches) of actual displacement before 12.1:1 compression. Fueling is metered via Carburettor allowing this machine to produce its 4.0 HP (2.9 kW) @ 7000 RPM horsepower and 4.0 Nm (0.4 kgf-m or 3.0 ft.lbs) @ 6500 RPM torque. According to our records engine heat of the Aprilia SR 50 Factory is moderated by Liquid. You'll need to get familiar with the Automatic transmission and pay attention to final drive maintainence. Our best information shows that the front tire size is 130/60-13 and the rear is 130/60-13 . The entire package is supported by the frame, Split single cradle frame in high tensile strength steel tube . We know you like to go fast or cruise all day, but when you need to stop, you'll be dependant on Single disc. 2 opposing pistons front brakes and Single disc. 2 opposing pistons rear brakes. The Aprilia SR 50 Factory was launched in 2021, and we're happy to know (or assume) you've got one in your garage. To help you keep your ride in tip-top shape, consider purchasing an owner or service manual.