Motocross Bikes
2022KTM 125 SX
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The 2022 KTM 125 SX is a lightweight two-stroke enduro bike designed for young riders and beginners entering competitive off-road racing. Its 124.8cc single-cylinder engine delivers 15 horsepower with sharp power delivery, making it ideal for learning fundamental dirt bike skills. Known for its nimble handling and aggressive styling, the 125 SX excels in technical terrain and remains a popular choice in junior motocross classes.
- Capacity
- 124.8 ccm
- Engine
- Single, two-stroke
- Gearbox
- 6-speed
- Dry weight
- 87.5 kg
- Seat height
- 950 mm
- Power
- 15.0 HP (10.9 kW)
Other years
2003
2004
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2008
2009
2010
2011
2012
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2018
2019
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2021
2022
2023
2025
2026
2027
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Built purely for closed-course motocross racing, it excels at jumps, berms, and rapid direction changes on dirt tracks rather than any street use.
- Built for
- Light, explosive, and razor-sharp in handling, it rewards aggressive riding with a peaky two-stroke power band and minimal weight to manage.
- Not ideal for
- It is not suitable for commuting, highway travel, passengers, or riders seeking comfort, storage, or a forgiving low-end power delivery.
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
- 124.8 ccm
- Power
- 15.0 HP (10.9 kW)
- Engine type
- Single, two-stroke
- Power/weight ratio
- 0.1714 HP/kg (dry)
- Bore x stroke
- 54.0 x 54.5 mm
- Cooling system
- Liquid
- Fuel system
- Injection
- Starting
- Kick
- Ignition
- Kokusan EMS
- Lubrication system
- Wet sump
Transmission
- Gearbox
- 6-speed
- Transmission type
- Manual
- Final drive
- Chain
- Clutch
- Multi-plate clutch, Brembo hydraulics
Dimensions & weight
- Wheelbase
- 1489 mm
- Seat height
- 950 mm
- Dry weight
- 87.5 kg
- Fuel capacity
- 7.50 litres
- Ground clearance
- 375 mm
Chassis & suspension
- Frame
- Central double-cradle-type 25CrMo4 steel
- Front suspension
- WP XACT-USD, Ø 48 mm
- Rear suspension
- WP XACT Monoshock with linkage
- Front wheel travel
- 310 mm
- Rear wheel travel
- 300 mm
- Rake (fork angle)
- 26.1°
- Trail
- 120 mm
Brakes & wheels
- Front brakes
- Single disc
- Front brakes diameter
- 260 mm
- Rear brakes
- Single disc
- Rear brakes diameter
- 220 mm
- Front tyre
- 110-17
- Rear tyre
- 150-17
Other
- Color options
- White/orange/blue
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 | 2003 | 2009 | 2015 | 2020 | 2022 | 2027 |
|---|---|---|---|---|---|---|
| Capacity | 125 cc | 125 cc | 125 cc | 125 cc | 125 cc | 125 cc |
| Dry weight | 94 kg | 91 kg | 91 kg | 88 kg | 88 kg | 92 kg |
| Seat height | 925 mm | 985 mm | 992 mm | 950 mm | 950 mm | 958 mm |
| Fuel capacity | 7.5 L | 8 L | 7.5 L | 7.5 L | 7.5 L | 7.2 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 125 SX?
The 2022 KTM 125 SX has a Capacity of 124.8 ccm (7.62 cubic inches).
What engine power does the KTM 125 SX have?
The 2022 KTM 125 SX has a Power of 15.0 HP (10.9 kW).
How many gears does the KTM 125 SX have?
The 2022 KTM 125 SX has a Gearbox of 6-speed.
How much does the KTM 125 SX weigh?
The 2022 KTM 125 SX has a Dry weight of 87.5 kg (192.9 pounds).
Shop this bike
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The 2022 KTM 125 SX is an incredibly agile and powerful motocross bike that is sure to impress riders of all skill levels. With its lightweight frame and powerful 125cc engine, this bike is perfect for tackling tight corners and fast straightaways. The advanced suspension system provides excellent handling and control, making it a top choice for competitive off-road racing. Additionally, the KTM 125 SX features top-of-the-line components and technology, ensuring a smooth and thrilling ride every time.
In conclusion, the 2022 KTM 125 SX is a fantastic choice for anyone looking for a high-performance motocross bike. Its lightweight design, powerful engine, and advanced suspension make it a top contender in the motocross world. Whether you're a seasoned rider or just starting out, the KTM 125 SX is sure to deliver an adrenaline-pumping experience that will leave you wanting more.
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