Motocross Bikes
2016KTM 50 SX
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The 2016 KTM 50 SX is a lightweight motocross bike engineered for young riders and beginners seeking their first competitive off-road experience. Its potent 49cc two-stroke engine delivers accessible performance, while premium WP suspension and central-tube frame geometry provide nimble handling and reliability. Known for its proven entry-level racing pedigree and responsive power delivery.
- Capacity
- 49.0 ccm
- Engine
- Single, two-stroke
- Gearbox
- 1-speed
- Dry weight
- 41.5 kg
- Seat height
- 684 mm
- Power
- 5.4 HP (4.0 kW)
What’s new for the 2016 KTM 50 SX
vs the 2015| Spec | 2015 | 2016 |
|---|---|---|
| Dry weight | 39.8 kg (87.7 pounds) | 41.5 kg (91.5 pounds) |
| Front suspension | WP  Suspension USD  35 | WP upside-down Ø 35 mm |
| Rear suspension | WP  Suspension  3614 BAEM | WP shock absorber |
Other years
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- It exists purely to teach a child the fundamentals of balance, throttle control, and off-road riding in a safe, low-powered package.
- Built for
- It behaves like a purpose-built miniature dirt bike, docile and forgiving with an automatic single-speed gearbox that removes clutch and shifting complexity so a child can focus on riding.
- Not ideal for
- It is not suitable for adults, taller teens, road use, touring, or anyone seeking real speed or highway 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
- 0.1301 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 2p D36
- Valves per cylinder
- 1
- Lubrication system
- Mixture oil lubrication
Transmission
- Gearbox
- 1-speed
- Transmission type
- Manual
- Final drive
- Chain
- Clutch
- Centrifugal clutch (adjustable)
Dimensions & weight
- Wheelbase
- 1032 mm
- Seat height
- 684 mm
- Dry weight
- 41.5 kg
- Fuel capacity
- 2.30 litres
- Ground clearance
- 252 mm
Chassis & suspension
- Frame
- Central-tube frame with double-cradle
- Front suspension
- WP upside-down Ø 35 mm
- Rear suspension
- WP shock absorber
- Front wheel travel
- 205 mm
- Rear wheel travel
- 185 mm
- Rake (fork angle)
- 24.0°
- Trail
- 90 mm
Brakes & wheels
- Front brakes
- Single disc. Four-piston calipers.
- Front brakes diameter
- 160 mm
- Rear brakes
- Single disc. Two-piston calipers.
- Rear brakes diameter
- 160 mm
- Front tyre
- 60/100-12
- Rear tyre
- 2.75-10
Other
- Color options
- Orange/white/black
- Comments
- For absolute beginners, the engine power can be restricted to 5.5 hp with a kit.
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 | 2011 | 2016 | 2021 | 2026 |
|---|---|---|---|---|---|
| Capacity | 49.00 ccm (2.99 cubic inches) | 49.00 ccm (2.99 cubic inches) | 49.00 ccm (2.99 cubic inches) | 49.0 ccm (2.99 cubic inches) | — |
| Dry weight | 38.8 kg (85.5 pounds) | 39.8 kg (87.7 pounds) | 41.5 kg (91.5 pounds) | 41.5 kg (91.5 pounds) | — |
| Seat height | 650 mm (25.6 inches) | 684 mm (26.9 inches) | 684 mm (26.9 inches) | 684 mm (26.9 inches) | 653 mm |
| Fuel capacity | 1.80 litres (0.48 gallons) | 2.30 litres (0.61 gallons) | 2.30 litres (0.61 gallons) | 2.30 litres (0.61 US gallons) | 2.3 l |
| Color options | — | Orange, black, white | Orange/white/black | White/Orange | — |
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?
The 2016 KTM 50 SX has a Capacity of 49.0 ccm (2.99 cubic inches).
What engine power does the KTM 50 SX have?
The 2016 KTM 50 SX has a Power of 5.4 HP (4.0 kW).
How many gears does the KTM 50 SX have?
The 2016 KTM 50 SX has a Gearbox of 1-speed.
How much does the KTM 50 SX weigh?
The 2016 KTM 50 SX has a Dry weight of 41.5 kg (91.5 pounds).
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