Motocross Bikes
2023KTM 50 SX
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The 2023 KTM 50 SX is an entry-level minibike designed for young riders learning to ride dirt bikes. Powered by a lightweight 49cc two-stroke engine with automatic clutch, it delivers easy handling and manageable power perfect for beginners. Known for KTM's aggressive styling and reliability, this bike excels as an affordable introduction to off-road motorcycling.
- Capacity
- 49.0 ccm
- Engine
- Single, two-stroke
- Gearbox
- 1-speed
- Dry weight
- 41.5 kg
- Seat height
- 665 mm
- Power
- 5.4 HP (4.0 kW)
What’s new for the 2023 KTM 50 SX
vs the 2022| Spec | 2022 | 2023 |
|---|---|---|
| Rear suspension | XACT WP mono shock | XACT WP PDS mono shock |
Other years
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
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 (dry)
- 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 EMS
- Lubrication system
- Mixture oil lubrication
Transmission
- Gearbox
- 1-speed
- Transmission type
- Automatic
- Final drive
- Chain
- Clutch
- Centrifugal
Dimensions & weight
- Wheelbase
- 1029 mm
- Seat height
- 665 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
- XACT 35 WP Upside-Down fork, Ø 35 mm
- Rear suspension
- XACT WP PDS mono shock
- Front wheel travel
- 205 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
- Single disc
- Rear brakes diameter
- 160 mm
- Front tyre
- 60/100-12
- Rear tyre
- 2.75-10
Other
- Color options
- White/orange/grey
- Comments
- Intended for children 4-10 years old.
Specs last verified against published sources: .
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 | 2017 | 2022 | 2023 | 2027 |
|---|---|---|---|---|---|---|
| Capacity | 49 cc | 49 cc | 49 cc | 49 cc | 49 cc | 50 cc |
| Dry weight | 39 kg | 40 kg | 42 kg | 42 kg | 42 kg | 44 kg |
| Seat height | 650 mm | 684 mm | 684 mm | 665 mm | 665 mm | 653 mm |
| Fuel capacity | 1.8 L | 2.3 L | 2.3 L | 2.3 L | 2.3 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?
The 2023 KTM 50 SX has a Capacity of 49.0 ccm (2.99 cubic inches).
What engine power does the KTM 50 SX have?
The 2023 KTM 50 SX has a Power of 5.4 HP (4.0 kW).
How many gears does the KTM 50 SX have?
The 2023 KTM 50 SX has a Gearbox of 1-speed.
How much does the KTM 50 SX weigh?
The 2023 KTM 50 SX has a Dry weight of 41.5 kg (91.5 pounds).
Shop this bike
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The 2023 KTM 50 SX is a high-performance and versatile dirt bike designed for young riders. With its lightweight chassis and powerful 2-stroke engine, this bike offers impressive agility and speed for junior riders looking to take on various off-road terrains. The bike's adjustable suspension and brakes provide excellent control and handling, making it an ideal choice for young riders to develop their skills and confidence off-road. Overall, the 2023 KTM 50 SX delivers a thrilling and reliable riding experience for young dirt bike enthusiasts.
In conclusion, the 2023 KTM 50 SX is a top-of-the-line choice for young riders seeking a competitive and exhilarating dirt biking experience. Its advanced engineering and high-quality components make it a standout option in the youth dirt bike market. Whether it's for racing or recreational riding, this bike offers the performance, durability, and safety features that young riders and their parents can trust.
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