These are the known mechanical and performance specifications for your 2013 Rieju MRT 50 Pro .
Basic Specs

Engine
Displacement50.00 ccm (3.05 cubic inches)
TypeMinarelli NG 50c.c. - 2T special cylinder
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
ExhaustMuffler with aluminium silencer
Lubrication
CoolingLiquid
Fuel Economy & Polution
Fuel Consumption
Fuel Capacity6.30 litres (1.66 gallons)
Emissions
Chassis
Frame TypeHighly resistant double cradle steel perimeter.
Rake
Trail
Front SuspensionMarzocchi inverted fork of Ø40mm.
Front Travel
Rear SuspensionGas Mono-shock shock absorber and separate bottle PRS system
Rear Travel
Seat
Seat Height850 mm (33.5 inches) If adjustable, lowest setting.
Alt. Seat Height
Total Height1,165 mm (45.9 inches)
Total Length2,150 mm (84.6 inches)
Total Width800 mm (31.5 inches)
Ground Clearance
Wheelbase1,405 mm (55.3 inches)
Dry Weight85.0 kg (187.4 pounds)
Wet Weight
Wheels & Brakes
Front Tire/Tyre80/90-21
Rear Tire/Tyre110/80-18
Front BrakesSingle disc. AJP 2-piston caliper. Galfer Wave.
Front Brake Diameter300 mm (11.8 inches)
Rear BrakesSingle disc. Galfer Wave.
Rear Brake Diameter200 mm (7.9 inches)
WheelsAlloy Rims
Comments
Made in Spain.