These are the known mechanical and performance specifications for your 2003 KTM 50 SX Pro Junior LC.
Basic Specs

Engine
Displacement49.80 ccm (3.04 cubic inches)
Type
DetailsSingle cylinder, two-stroke
Max RPM
Compression
Bore/Stroke39.5 x 40.0 mm (1.6 x 1.6 inches)
Valves/Cylinder
FuelingCarburettor
Ignition
Exhaust
Lubrication
CoolingLiquid
Fuel Economy & Polution
Fuel Consumption
Fuel Capacity2.00 litres (0.53 gallons)
Emissions
Chassis
Frame Type
Rake
Trail
Front Suspension
Front Travel140 mm (5.5 inches)
Rear Suspension
Rear Travel205 mm (8.1 inches)
Seat
Seat Height585 mm (23.0 inches) If adjustable, lowest setting.
Alt. Seat Height610 mm (24.0 inches) If adjustable, highest setting.
Total Height
Total Length
Total Width
Ground Clearance220 mm (8.7 inches)
Wheelbase910 mm (35.8 inches)
Dry Weight37.6 kg (82.9 pounds)
Wet Weight
Wheels & Brakes
Front Tire/Tyre2.75-10
Rear Tire/Tyre2.50-10
Front BrakesSingle disc
Front Brake Diameter160 mm (6.3 inches)
Rear BrakesExpanding brake (drum brake)
Rear Brake Diameter90 mm (3.5 inches)
Wheels
Comments