The KTM 50 SX Junior motorcycle specifications include a 49 cc (2.99 cu in) engine and a listed weight of 37.6 kg (82.9 lb).
Key specifications
The 2006 model is treated as the standard specification. Only later model years with a different supplied value are shown below.
How the KTM 50 SX Junior compares
This compares the motorcycle with all KTM models in this specifications database. The blue marker is this model and the grey line is the KTM database average.
About 89% lower than the KTM database average. Around the 4th percentile across KTM models.
About 35% lower than the KTM database average. Around the 2nd percentile across KTM models.
About 83% smaller than the KTM database average. Around the 1st percentile across KTM models.
KTM database percentile rankings
Percentiles show where this motorcycle sits across the KTM specifications database. They are descriptive database rankings, not performance ratings.
49 cc — larger displacement than about 4% of KTM models.
585 mm — taller than about 2% of KTM models.
1.8 L — larger than about 1% of KTM fuel tanks in this database.
Dimensions compared with KTM average
Each measurement is compared with the average value across KTM models where that dimension is available.
910
1,436
37% below average.
585
895
35% below average.
220
304
28% below average.
Mechanical overview
Additional useful specifications
| Bore/stroke ratio | 0.99:1 (Square) |
|---|
Engine specifications
| Engine type | Single cylinder, two-stroke |
|---|---|
| Displacement | 49 cc (2.99 cu in) |
| Bore × stroke | 39.5 x 40 mm (1.6 x 1.6 inches) |
| Cooling system | Liquid |
| Fuel system | Carburettor. Dell´Orto PHVA 14DS |
| Ignition | Seletra analogue |
| Starter | Kick |
| Lubrication | 0,15- 0,2 l Motorex ATF Super |
Transmission and drivetrain
| Clutch | Centrifugal clutch (adjustable) |
|---|
Chassis and suspension
| Frame | Central double-cradle-type frame |
|---|---|
| Front suspension | Marzocchi 32 mm (1.26 inches) |
| Rear suspension | WP monoshock |
| Rake | 24.0° |
Brakes, wheels and tires
| Front brakes | Single disc |
|---|---|
| Rear brakes | Expanding brake (drum brake) |
Dimensions and weight
| Dry weight | 37.6 kg (82.9 lb) |
|---|---|
| Seat height | 585 mm (23.0 inches) |
| Wheelbase | 910 mm (35.8 inches) |
| Ground clearance | 220 mm (8.7 inches) |
Fuel and emissions
| Fuel capacity | 1.80 L (0.48 US gal) |
|---|
Other specifications
| Exhaust system | Aluminum |
|---|
Disclaimer: Specifications may vary by market, trim, production date and optional equipment, and scraped or historical data can contain errors. Comparison and percentile values are calculated from KTM models in this specifications database. Always double-check important specifications against the motorcycle owner’s/service manual and official KTM information before relying on them. Visit the official KTM website.