These are the known mechanical and performance specifications for your 2014 Sym Jet 4 50 R Naked.
Basic Specs

Engine
Displacement49.40 ccm (3.01 cubic inches)
Type
DetailsSingle cylinder, two-stroke
Max RPM
Compression
Bore/Stroke
Valves/Cylinder
FuelingCarburettor
Ignition
Exhaust
Lubrication
CoolingAir
Fuel Economy & Polution
Fuel Consumption
Fuel Capacity5.20 litres (1.37 gallons)
Emissions
Chassis
Frame TypePipe under bone
Rake
Trail
Front SuspensionTelescopic fork
Front Travel
Rear SuspensionUnit swing
Rear Travel
Seat
Seat Height
Alt. Seat Height
Total Height1,140 mm (44.9 inches)
Total Length1,900 mm (74.8 inches)
Total Width655 mm (25.8 inches)
Ground Clearance
Wheelbase1,300 mm (51.2 inches)
Dry Weight109.0 kg (240.3 pounds)
Wet Weight
Wheels & Brakes
Front Tire/Tyre120/60-13
Rear Tire/Tyre130/70-12
Front BrakesSingle disc
Front Brake Diameter226 mm (8.9 inches)
Rear BrakesExpanding brake (drum brake)
Rear Brake Diameter
Wheels
Comments
Made in Taiwan.