2016 KTM 50 SX


The 50 SX is a true KTM for young MX riders aged from around four to 10 years old, up to a body height of 1.30m. A genuine motorcycle that, like its bigger siblings, is produced with quality components that make the 50 SX the first choice as a stepping stone into the MX world or for the first racing step on the ladder. With the youngster in mind this package is easy to control and has an engine that is distinguished by a steady power delivery, incorporating an automatic clutch that is ideal for novice riders. For MY 2016 the 50 SX presents itself with newly designed bodywork that provides better ergonomics and makes the bike even easier to ride.

Control Thats's Child's Play

  • HANDLEBARS: Made of high quality aluminum alloy, the new ergonomic handlebars offer top stability and safety. A new crash pad on the handlebar brace protects the rider from impact.
  • WHEELS: Like the big KTM factory racers, the 50 SX has super lightweight, black anodized, aluminum rims providing the highest strength and safety. The OEM knobby MAXXIS tires grip superbly on any surface.
  • SUSPENSION: Top-quality 35 mm upside down front forks by WP Suspension 185mm of travel ensure outstanding directional stability. On the rear wheel a WP monoshock linked directly to the swingarm provides 205mm of suspension travel.
  • BRAKES: The 50 SX is fitted with front and rear hydraulic brakes by Formula combined with lightweight WAVE discs that are easy to control even for the youngest riders. This ensures the best braking and the highest standard when it comes to safety.

Extremely Compact 2-Stroke Engine

  • ENGINE: The modern, extremely compact 2-stroke engine fitted with an automatic clutch sets the standard in its class with great, manageable power. Thanks to the 3-shaft design, the crankshaft is close to the bike's center of gravity. This not only benefits the handling, but also allows for a flow-optimized intake angle into the reed valve - a prerequisite for maximum performance.
  • CLUTCH: Developed by KTM, the centrifugal multi-disc automatic clutch provides manageable acceleration and makes riding this motorcycle the easiest thing in the world. It can be adjusted, without tools, to the specific requirements of the track and the rider in minutes.
  • POWER REDUCTION: For absolute beginners the engine power can be reduced to a moderate 5.5hp using a kit from the Power Parts program.

General Information

Manufacturer KTM
Model Year 2016
Model 50 SX
Model Code 50SX
Color Orange



Front - 160 mm Disc brake

Rear - 160 mm Disc brake


Weight 41.5 kg
Ground Clearance 252 mm
Wheelbase 1032 ± 10 mm
Seat Height 684 mm


Transmission Single-speed automatic
Final Drive 61:33


Engine 1-cylinder, 2-stroke engine
Displacement 49 cm³
Bore x Stroke 39.5 x 40 mm
Fuel Capacity 2.4 qt. (2.3 l)
Ignition Seletra 2p D36
Clutch Centrifugal clutch (adjustable)
Cooling Liquid cooling system
Lubrication Mixture oil
Gear Ratio 11:40


Starting Kickstarter
Frame Central-tube frame with double-cradle

Front - WP upside-down Ø 35 mm / Travel 205 mm

Rear - WP monoshock / Travel 185 mm

Rake 66 °