These are the known mechanical and performance specifications for your 2011 Sym Jet SportX 50 Factory.
Basic Specs

Engine
Displacement49.40 ccm (3.01 cubic inches)
Type
DetailsSingle cylinder, two-stroke
Max RPM
Compression
Bore/Stroke39.0 x 41.4 mm (1.5 x 1.6 inches)
Valves/Cylinder
FuelingCarburettor
Ignition
Exhaust
Lubrication
CoolingAir
Fuel Economy & Polution
Fuel Consumption
Fuel Capacity6.30 litres (1.66 gallons)
Emissions
Chassis
Frame Type
Rake
Trail
Front Suspension
Front Travel
Rear Suspension
Rear Travel
Seat
Seat Height
Alt. Seat Height
Total Height1,120 mm (44.1 inches)
Total Length1,850 mm (72.8 inches)
Total Width
Ground Clearance
Wheelbase1,275 mm (50.2 inches)
Dry Weight98.0 kg (216.1 pounds)
Wet Weight105.0 kg (231.5 pounds)
Wheels & Brakes
Front Tire/Tyre120/70-12
Rear Tire/Tyre130/70-12
Front BrakesSingle disc. Wave disk
Front Brake Diameter190 mm (7.5 inches)
Rear BrakesSingle disc. Optional drum brake
Rear Brake Diameter160 mm (6.3 inches)
Wheels


Comments
Three variants called SportX-S, SportX-R, SportX-SR. SYM bikes are made in Taiwan.