These are the known mechanical and performance specifications for your 2016 Rieju RS3 50 .
Basic Specs

Engine
Displacement50.00 ccm (3.05 cubic inches)
TypeYamaha-Minarelli engine
DetailsSingle cylinder, two-stroke
Max RPM
Compression
Bore/Stroke40.3 x 39.0 mm (1.6 x 1.5 inches)
Valves/Cylinder
FuelingCarburettor. Dell´Orto PHBN 16
Ignition
ExhaustExhaust pipe with aluminium silencer
LubricationSeparate mixture
CoolingLiquid
Fuel Economy & Polution
Fuel Consumption
Fuel Capacity12.00 litres (3.17 gallons)
Emissions
Chassis
Frame TypeTriangular double cradle double steel tube
Rake
Trail
Front SuspensionShowa fork of Ø35mm.
Front Travel
Rear SuspensionMono-shock shock absorber
Rear Travel
Seat
Seat Height845 mm (33.3 inches) If adjustable, lowest setting.
Alt. Seat Height
Total Height1,100 mm (43.3 inches)
Total Length1,970 mm (77.6 inches)
Total Width720 mm (28.3 inches)
Ground Clearance
Wheelbase1,330 mm (52.4 inches)
Dry Weight119.0 kg (262.4 pounds)
Wet Weight
Wheels & Brakes
Front Tire/Tyre100/80-17
Rear Tire/Tyre130/80-17
Front BrakesSingle disc. Dual piston caliper.
Front Brake Diameter280 mm (11.0 inches)
Rear BrakesSingle disc
Rear Brake Diameter220 mm (8.7 inches)
Wheels
Comments
Spanish made bike.