
KTM 50 SX
Key specifications
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)