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KTM 50 SX
2018Off-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 2018 KTM 50 SX, a standout entry in the world of cross-motocross motorcycles, designed specifically for young riders who aspire to conquer the track with confidence and style. As a premier model from KTM, the 50 SX embodies the brand's commitment to performance and innovation, making it an ideal choice for budding motocross enthusiasts. With its vibrant orange, white, and black color scheme, this bike not only performs exceptionally but also turns heads on the track, setting the stage for the next generation of champions. At the heart of the 50 SX lies a potent 49cc single-cylinder, two-stroke engine that delivers a thrilling riding experience. Boasting a bore and stroke of 39.5 x 40.0 mm, the engine is designed to produce a remarkable power-to-weight ratio. Riders will appreciate the smooth delivery of power, facilitated by the Mikuni TMX carburettor and liquid cooling system. The one-speed gearbox, paired with a centrifugal clutch, enables effortless acceleration, allowing young riders to focus on honing their skills without the distraction of complex shifting. With the option to restrict the engine's power to 5.5 hp, parents can tailor the bike's performance to match the rider's growing abilities. The 2018 KTM 50 SX is equipped with cutting-edge technology and features to ensure a comfortable and safe riding experience. The central-tube frame with a double-cradle design provides exceptional stability, while the WP suspension system—featuring upside-down front forks and a rear shock absorber—offers 205 mm and 185 mm of travel, respectively. This robust suspension setup absorbs bumps with ease, allowing riders to tackle challenging terrain confidently. The powerful braking system, comprising 160 mm single disc brakes at both the front and rear, ensures reliable stopping power, making quick maneuvers and tight turns a breeze. **

Pros

  • Lightweight and Agile: At just 41.5 kg (91.5 pounds), the KTM 50 SX is lightweight, making it easy for young riders to handle and maneuver.
  • Powerful Engine Performance: The potent two-stroke engine delivers impressive power and acceleration, perfect for those looking to build their motocross skills.
  • High-Quality Suspension System: The advanced WP suspension provides excellent travel and stability, enhancing both comfort and control over rough tracks.

Cons

  • Limited Fuel Capacity: With a fuel tank that holds just 2.30 litres (0.61 gallons), riders may find themselves refueling often during extended practice sessions.
  • Kick Start Only: The absence of an electric start can be a hurdle for younger riders who may struggle with kick-starting the bike.
  • Single-Speed Gearbox: While simplicity is beneficial for beginners, the single-speed gearbox may limit the bike's versatility for more experienced riders looking for varied performance on different terrains.

Technical details

Source specification data

Make
KTM
Model
50 SX
Category
Cross-motocross
Starter
Kick
Comments
The engine power can be restricted to 5.5 hp with a kit.
Color Options
Orange/white/black
Clutch
Centrifugal clutch
Gearbox
1-speed
Ignition
Seletra 2p D36
Engine Type
Reed intake
Fuel System
Carburettor. Mikuni TMX
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
Wire spoked
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