Motocross Bikes
2006KTM 50 SX Junior
33 fields on record
The 2006 KTM 50 SX Junior is a liquid-cooled two-stroke minibike designed for young motocross riders developing their skills. Known for its responsive handling and aggressive styling, this entry-level competition machine combines a lightweight frame with quality Marzocchi suspension for confident cornering on the track.
- Capacity
- 49.0 ccm
- Engine
- Single, two-stroke
- Gearbox
- Not on record
Know it? Add it → - Dry weight
- 37.6 kg
- Seat height
- 585 mm
- Power
- 5.4 HP (4.0 kW)
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- It exists purely to teach small children the basics of off-road motorcycling in a safe, low-power, automatic-clutch package.
- Built for
- Simple, forgiving, and non-intimidating, this minibike is designed to build confidence with gentle power delivery and no manual shifting required.
- Not ideal for
- It is not suitable for teenagers, adults, road use, or anyone seeking real speed, power, or long-distance capability.
Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.
Will it fit you?
Worked out in your browser - nothing is sent to usEngine
- Capacity
- 49.0 ccm
- Power
- 5.4 HP (4.0 kW)
- Engine type
- Single, two-stroke
- Power/weight ratio
- 0.1436 HP/kg
- Bore x stroke
- 39.5 x 40.0 mm
- Compression
- 12.5:1
- Cooling system
- Liquid
- Fuel system
- Carburettor
- Starting
- Kick
- Ignition
- Seletra analogue
- Lubrication system
- 0,15- 0,2 l Motorex ATF Super
Transmission
- Transmission type
- Automatic
- Final drive
- Chain
- Clutch
- Centrifugal clutch (adjustable)
Dimensions & weight
- Wheelbase
- 910 mm
- Seat height
- 585 mm
- Dry weight
- 37.6 kg
- Fuel capacity
- 1.80 litres
- Ground clearance
- 220 mm
Chassis & suspension
- Frame
- Central double-cradle-type frame
- Front suspension
- Marzocchi 32 mm (1.26 inches)
- Rear suspension
- WP monoshock
- Front wheel travel
- 115 mm
- Rear wheel travel
- 185 mm
- Rake (fork angle)
- 24.0°
- Trail
- 90 mm
Brakes & wheels
- Front brakes
- Single disc
- Front brakes diameter
- 160 mm
- Rear brakes
- Expanding brake (drum brake)
- Rear brakes diameter
- 90 mm
- Front tyre
- 2.50-10
- Rear tyre
- 2.75-10
Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.
What changed, year to year
Differences highlighted| Specification | 2006 | 2007 | 2008 | 2009 |
|---|---|---|---|---|
| Capacity | 49 cc | 49 cc | 49 cc | 49 cc |
| Dry weight | 38 kg | 38 kg | 38 kg | 38 kg |
| Seat height | 585 mm | 585 mm | 585 mm | 607 mm |
| Fuel capacity | 1.8 L | 1.8 L | 1.8 L | 2.3 L |
Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.
Rider Reviews
Common questions
What is the engine size of the KTM 50 SX Junior?
The 2006 KTM 50 SX Junior has a Capacity of 49.0 ccm (2.99 cubic inches).
What engine power does the KTM 50 SX Junior have?
The 2006 KTM 50 SX Junior has a Power of 5.4 HP (4.0 kW).
How much does the KTM 50 SX Junior weigh?
The 2006 KTM 50 SX Junior has a Dry weight of 37.6 kg (82.9 pounds).
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