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

Engine
Displacement50.00 ccm (3.05 cubic inches)
Type
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 Capacity10.40 litres (2.75 gallons)
Emissions
Chassis
Frame TypeTriangular double cradle double steel tube
Rake
Trail
Front SuspensionPaioli fork of Ø36mm.
Front Travel
Rear SuspensionMono-shock shock absorber
Rear Travel
Seat
Seat Height800 mm (31.5 inches) If adjustable, lowest setting.
Alt. Seat Height
Total Height1,060 mm (41.7 inches)
Total Length1,900 mm (74.8 inches)
Total Width620 mm (24.4 inches)
Ground Clearance
Wheelbase1,300 mm (51.2 inches)
Dry Weight109.5 kg (241.4 pounds)
Wet Weight
Wheels & Brakes
Front Tire/Tyre100/80-17
Rear Tire/Tyre
Front BrakesSingle disc
Front Brake Diameter
Rear BrakesSingle disc
Rear Brake Diameter220 mm (8.7 inches)
Wheels
Comments
Spanish made bike.