
KTM 50 SX
Key specifications
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)