These are the known mechanical and performance specifications for your 2010 Rieju MX Disc 50 .
Basic Specs

Engine
Displacement50.00 ccm (3.05 cubic inches)
Type
DetailsSingle cylinder, two-stroke
Max RPM
Compression
Bore/Stroke39.0 x 41.8 mm (1.5 x 1.6 inches)
Valves/Cylinder
FuelingCarburettor. Dell-Orto SHA 14/12
Ignition
ExhaustMuffler with silencer
Lubrication
CoolingAir
Fuel Economy & Polution
Fuel Consumption
Fuel Capacity2.50 litres (0.66 gallons)
Emissions
Chassis
Frame TypeDouble cradle steel tube
Rake
Trail
Front SuspensionHydraulic telescopic fork of Ø36mm.
Front Travel
Rear SuspensionMono-shock shock absorber
Rear Travel
Seat
Seat Height740 mm (29.1 inches) If adjustable, lowest setting.
Alt. Seat Height
Total Height995 mm (39.2 inches)
Total Length1,596 mm (62.8 inches)
Total Width685 mm (27.0 inches)
Ground Clearance
Wheelbase1,100 mm (43.3 inches)
Dry Weight46.0 kg (101.4 pounds)
Wet Weight
Wheels & Brakes
Front Tire/Tyre2.50-15
Rear Tire/Tyre3.00-12
Front BrakesSingle disc
Front Brake Diameter145 mm (5.7 inches)
Rear BrakesSingle disc
Rear Brake Diameter145 mm (5.7 inches)
Wheels
Comments
Intended for children 6-11 years of age.