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KTM 50 SX
2016Off-road

KTM 50 SX

Key specifications

Engine
49 cc
Weight
42 kg
Fuel type
petrol
Fuel capacity
0.6 L
Transmission
1-speed
Seat height
27 mm
Front brakes
Single disc. Four-piston calipers.
Rear brakes
Single disc. Two-piston calipers.

Overview

Introducing the 2016 KTM 50 SX, a bike that stands proudly at the crossroads of performance and accessibility, designed specifically for young and aspiring motocross riders. With its lightweight construction and agile handling, this cross-motocross motorcycle is tailored for beginners who are ready to embrace the thrill of dirt biking. KTM has built a reputation for producing high-quality machines, and the 50 SX is no exception, serving as an ideal entry point into the world of motocross for the next generation of riders. At the heart of the 50 SX lies a spirited 49cc single-cylinder, two-stroke engine, known for its responsiveness and performance. With a bore and stroke of 39.5 mm x 40 mm, this small but mighty powerplant delivers an exhilarating ride while maintaining ease of use for beginners. The liquid-cooled engine is fed by a carburettor and ignited by a Seletra 2p D36 ignition system, ensuring reliable starts and smooth acceleration. The unique one-speed gearbox paired with a centrifugal clutch allows for seamless take-offs, making it easier for novice riders to focus on their skills rather than complicated shifting. For those just starting out, KTM also offers a power-restriction kit that limits output to 5.5 hp, providing a manageable introduction to motocross. The 50 SX’s chassis is a marvel of engineering, featuring a central-tube frame that balances strength and agility. With a rake of 24 degrees and a front suspension with a WP upside-down fork boasting an impressive 205 mm of travel, the bike handles rough terrain with ease, allowing riders to confidently tackle jumps and bumps. The braking system is equally impressive, featuring a single disc with four-piston calipers at the front and two-piston calipers at the rear, both offering exceptional stopping power when needed. With a seat height of just 684 mm and a ground clearance of 252 mm, this motorcycle is perfectly suited for young riders, ensuring they feel secure and in control as they navigate their first dirt tracks. **

Pros

  • Lightweight Design: Weighing in at just 41.5 kg (91.5 pounds), the 50 SX is easy for young riders to maneuver and control.
  • Power Restriction Kit: The optional kit allows parents to adjust the bike’s power output, making it ideal for absolute beginners.
  • Robust Braking System: The high-performance braking system provides confidence and safety for riders tackling various terrains.

Cons

  • Limited Speed Options: The one-speed gearbox may feel restrictive to more advanced riders looking for speed variations.
  • Small Fuel Capacity: With a 2.3-litre fuel tank, longer rides may require frequent refueling.
  • Kick Start Only: The absence of an electric starter may be challenging for younger riders who are still building their strength.

Technical details

Source specification data

Make
KTM
Model
50 SX
Category
Cross-motocross
Starter
Kick
Comments
For absolute beginners, the engine power can be restricted to 5.5 hp with a kit.
Color Options
Orange/white/black
Clutch
Centrifugal clutch (adjustable)
Gearbox
1-speed
Ignition
Seletra 2p D36
Driveline
11:40. Primary drive: 33:61 straight cut spur gear.
Engine Type
Reed intake.
Fuel System
Carburettor
Bore X Stroke
39.5 x 40.0 mm (1.6 x 1.6 inches)
Displacement
49.00 ccm (2.99 cubic inches)
Cooling System
Liquid
Engine Details
Single cylinder, two-stroke
Lubrication System
Mixture oil lubrication
Transmission Type Final Drive
Chain
Dry Weight
41.5 kg (91.5 pounds)
Seat Height
684 mm (26.9 inches) If adjustable, lowest setting.
Fuel Capacity
2.30 litres (0.61 gallons)
Ground Clearance
252 mm (9.9 inches)
Rake
24.0°
Wheels
Knobbly MAXXIS tires
Frame Type
Central-tube frame with double-cradle
Rear Brakes
Single disc. Two-piston calipers.
Front Brakes
Single disc. Four-piston calipers.
Rear Suspension
WP shock absorber
Front Suspension
WP upside-down Ø 35 mm
Rear Wheel Travel
185 mm (7.3 inches)
Front Wheel Travel
205 mm (8.1 inches)
Rear Brakes Diameter
160 mm (6.3 inches)
Front Brakes Diameter
160 mm (6.3 inches)

Available colors

Orange/white/black