At the heart of the 2020 Aprilia STX 150 allround motorcycle, Aprilia relies on a 149 cc (9.1 cu in) air-cooled single cylinder, four-stroke powerplant. Internal engine geometry specifies a bore and stroke of 62.0 x 49.5 mm (2.4 x 1.9 inches).
Rider ergonomics and chassis geometry center around a 1,330 mm (52.4 in) wheelbase engineered for quick, flickable steering geometry. The 18-liter (4.8 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Aprilia archive, this model family spans 2 indexed model years from 2016 to 2020, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Engine
Displacement149.0 ccm (9.09 cubic inches)
Engine TypeSingle cylinder, four-stroke
Bore x Stroke62.0 x 49.5 mm (2.4 x 1.9 inches)
Valves/Cylinder2
Fuel SystemCarburettor. Keihin
Fuel ControlSingle Overhead Cams (SOHC)
LubricationDry sump
CoolingAir
Transmission
Gearbox6-speed
Final DriveChain (final drive)
ClutchMulti-plate in oil bath.
Performance
Emission DetailsEuro 3
Chassis
Frame TypeSteel spar
Front SuspensionHydraulic forks
Front Travel110 mm (4.3 inches)
Rear SuspensionTwin shock with adjustable spring preload.
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.
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.
