These are the known mechanical and performance specifications for your 2010 Dafier WX2 50.
Basic Specs

Engine
Displacement49.90 ccm (3.04 cubic inches)
Type
DetailsSingle cylinder, four-stroke
Max RPM
Compression10.1:1
Bore/Stroke39.0 x 41.5 mm (1.5 x 1.6 inches)
Valves/Cylinder
Fueling
IgnitionCDI
Exhaust
Lubrication
CoolingAir
Performance
Horespower3.75 HP (2.7 kW)
Torque
Top Speed45.0 km/h (28.0 mph)
Fuel Economy & Polution
Fuel Consumption2.00 litres/100 km (50.0 km/l or 117.61 mpg)
Fuel Capacity4.50 litres (1.19 gallons)
Emissions46.4 CO2 g/km. (CO2 - Carbon dioxide emission)
Chassis
Frame Type
Rake
Trail
Front Suspension
Front Travel
Rear Suspension
Rear Travel
Seat
Seat Height
Alt. Seat Height
Total Height1,131 mm (44.5 inches)
Total Length1,839 mm (72.4 inches)
Total Width664 mm (26.1 inches)
Ground Clearance170 mm (6.7 inches)
Wheelbase1,310 mm (51.6 inches)
Dry Weight78.0 kg (172.0 pounds)
Wet Weight
Wheels & Brakes
Front Tire/Tyre120/70-12
Rear Tire/Tyre130/70-12
Front BrakesSingle disc
Front Brake Diameter
Rear BrakesExpanding brake (drum brake)
Rear Brake Diameter
Wheels
Comments
Dafier is a Chinese brand.