These are the known mechanical and performance specifications for your 2017 Rieju MRT 50 .
Basic Specs

Engine
Displacement50.00 ccm (3.05 cubic inches)
TypeMinarelli NG
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
ExhaustRacing Muffle
Lubrication
CoolingLiquid
Fuel Economy & Polution
Fuel Consumption
Fuel Capacity6.30 litres (1.66 gallons)
Emissions
Chassis
Frame TypeHighly resistant double cradle steel perimeter. Detachable rear sub-chassis.
Rake
Trail
Front SuspensionFork of Ø37mm.
Front Travel
Rear SuspensionMono-shock shock absorber
Rear Travel
Seat
Seat Height890 mm (35.0 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
Front Brake Diameter220 mm (8.7 inches)
Rear BrakesSingle disc
Rear Brake Diameter180 mm (7.1 inches)
Wheels
Comments
Spanish brand.