
KTM 50 SX
Key specifications
Overview
Introducing the 2008 KTM 50 SX, a powerhouse in the minibike-cross category that perfectly exemplifies KTM's commitment to performance and youth development in motorcycling. Designed for aspiring young racers, this nimble machine is engineered to provide an exhilarating introduction to the world of motocross. With its aggressive styling and lightweight frame, the 50 SX is not just a bike; it’s a ticket to adventure, encouraging young riders to hone their skills and ignite their passion for dirt biking. At the heart of the KTM 50 SX is a robust 49cc single-cylinder, two-stroke engine, engineered to deliver a thrilling ride that balances power and control. With a compression ratio of 12.5:1 and a bore-stroke ratio of 39.5 x 40.0 mm, this engine is designed for rapid acceleration and responsive handling. The liquid-cooled system ensures optimal performance even during intense rides, while the automatic gearbox and adjustable centrifugal clutch make it easier for younger riders to focus on mastering their technique without the complexities of manual shifting. Whether tackling tight corners on a motocross track or cruising through trails, the 50 SX serves up a ride that’s both exhilarating and confidence-inspiring. The 2008 model is equipped with cutting-edge features that enhance both performance and safety. Its double-cradle-type frame provides excellent stability, paired with a Marzocchi front suspension and WP monoshock rear suspension that absorb bumps with ease, offering 120 mm and 125 mm of travel, respectively. The braking system is equally impressive, featuring single disc brakes from Bremo that deliver reliable stopping power to keep young riders safe. With a seat height of just 660 mm, this bike is perfectly suited for younger riders, allowing them to maintain control and comfort as they navigate their environment. The kick starter adds a classic touch, giving the 50 SX a straightforward, no-nonsense charm. **
Pros
- Lightweight design (38.8 kg) enhances maneuverability and control for young riders.
- Powerful and responsive two-stroke engine provides thrilling performance, perfect for aspiring racers.
- Advanced suspension system ensures a smooth ride over rough terrain, enhancing confidence in handling.
Cons
- Limited fuel capacity (1.80 liters) may necessitate frequent stops during extended riding sessions.
- The automatic gearbox may not provide the learning experience of manual shifting for more advanced young riders.
- As a specialized machine, it may not be suitable for casual riding outside of off-road or motocross environments.
Technical details
Source specification data
- Make
- KTM
- Model
- 50 SX
- Category
- Minibike-cross
- Starter
- Kick
- Clutch
- Centrifugal clutch (adjustable)
- Gearbox
- Automatic
- Ignition
- Seletra analogue
- Fuel System
- Carburettor. DELL´ORTO PHBG 19 BS
- Bore X Stroke
- 39.5 x 40.0 mm (1.6 x 1.6 inches)
- Compression
- 12.5:1
- Displacement
- 49.00 ccm (2.99 cubic inches)
- Cooling System
- Liquid
- Engine Details
- Single cylinder, two-stroke
- Lubrication System
- Mixture lubrication 1:60
- Transmission Type Final Drive
- Chain
- Dry Weight
- 38.8 kg (85.5 pounds)
- Seat Height
- 660 mm (26.0 inches) If adjustable, lowest setting.
- Fuel Capacity
- 1.80 litres (0.48 gallons)
- Ground Clearance
- 255 mm (10.0 inches)
- Alternate Seat Height
- 685 mm (27.0 inches) If adjustable, highest setting.
- Rake
- 24.0°
- Trail
- 90 mm (3.5 inches)
- Rear Tyre
- 2.75-10
- Frame Type
- Double grinded central double-cradle-type frame
- Front Tyre
- 2.50-12
- Rear Brakes
- Single disc. bremo
- Front Brakes
- Single disc. Bremo
- Rear Suspension
- WP monoshock
- Front Suspension
- Marzocchi Ø 32 mm (1.26
- Rear Wheel Travel
- 125 mm (4.9 inches)
- Front Wheel Travel
- 120 mm (4.7 inches)
- Rear Brakes Diameter
- 140 mm (5.5 inches)
- Front Brakes Diameter
- 160 mm (6.3 inches)