
KTM 50 SX
Key specifications
Overview
Introducing the 2019 KTM 50 SX, a lightweight powerhouse designed specifically for aspiring young motocross racers. As a leading name in the world of off-road motorcycles, KTM has crafted the 50 SX to deliver an exhilarating riding experience, making it the perfect entry point for kids eager to dominate the dirt. With its vibrant orange, white, and black color scheme, this bike not only looks the part but also embodies the spirit of competition that KTM is renowned for. Positioned in the cross-motocross category, the 50 SX is engineered for those who are serious about honing their skills on the track. At the heart of the KTM 50 SX is a robust 49cc single-cylinder two-stroke engine that promises impressive performance for its size. The engine features a bore and stroke of 39.5 x 40.0 mm, ensuring a responsive throttle that will delight both novice and experienced young riders alike. The Mikuni TMX carburettor optimizes fuel delivery, while the liquid cooling system maintains performance consistency even during intense riding sessions. With a user-friendly 1-speed gearbox equipped with a centrifugal clutch, young riders can focus on mastering their technique without the added complexity of manual shifting. For added convenience, the power output can be restricted to 5.5 horsepower, allowing for gradual skill development as riders grow more confident. The 2019 KTM 50 SX is built with a sturdy yet lightweight central-tube frame that enhances agility, making it easy for riders to maneuver through tight corners and challenging terrains. The WP upside-down front suspension, offering 205 mm of travel, absorbs bumps and ensures a smooth ride, while the rear suspension provides an additional 185 mm of travel for optimal control. Safety is also a priority, as evidenced by the reliable braking system featuring 160 mm single discs with four-piston calipers in the front and two-piston calipers in the rear. The bike's compact dimensions, including a seat height of 684 mm (at its lowest setting) and a ground clearance of 252 mm, make it accessible for younger riders, empowering them to build confidence on two wheels. **
Pros
- Lightweight & Agile: Weighing in at just 41.5 kg (91.5 lbs), the 50 SX is easy to handle, allowing young riders to explore their limits.
- User-Friendly Power Delivery: The centrifugal clutch and 1-speed gearbox simplify operation, making it ideal for beginners learning to ride.
- High-Quality Suspension: The WP suspension components provide excellent handling and comfort over rough terrain, enhancing the overall riding experience.
Cons
- Limited Power Output: While the restrictable engine is great for beginners, more experienced riders may find the power underwhelming.
- Small Fuel Capacity: At just 2.30 litres (0.61 gallons), the fuel tank may require frequent refueling during longer riding sessions.
- Kick Start Only: The absence of an electric start might be a hurdle for some young riders who may struggle with the kick-start mechanism.
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)