These are the known mechanical and performance specifications for your 2020 Aprilia STX 150.
Basic Specs

Engine
Displacement149.0 ccm (9.09 cubic inches)
Type
DetailsSingle cylinder, four-stroke
Max RPM
Compression
Bore/Stroke62.0 x 49.5 mm (2.4 x 1.9 inches)
Valves/Cylinder2
FuelingCarburettor. Keihin
Ignition
Exhaust
LubricationDry sump
CoolingAir
Fuel Economy & Polution
Fuel Consumption
Fuel Capacity18.00 litres (4.76 US gallons)
Emissions
Chassis
Frame TypeSteel spar
Rake
Trail
Front SuspensionHydraulic forks
Front Travel110 mm (4.3 inches)
Rear SuspensionTwin shock with adjustable spring preload.
Rear Travel122 mm (4.8 inches)
Seat
Seat Height
Alt. Seat Height
Total Height
Total Length2000 mm (78.7 inches)
Total Width760 mm (29.9 inches)
Ground Clearance
Wheelbase1330 mm (52.4 inches)
Dry Weight
Wet Weight
Wheels & Brakes
Front Tire/Tyre90/90-17
Rear Tire/Tyre110/80-17
Front BrakesSingle disc
Front Brake Diameter240 mm (9.4 inches)
Rear BrakesExpanding brake (drum brake)
Rear Brake Diameter104 mm (4.1 inches)
WheelsAluminium alloy
Comments
Sold in New Zealand.