Motocross Bikes
2025KTM 250 SX
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The 2025 KTM 250 SX is a lightweight two-stroke motocross bike engineered for intermediate to advanced riders seeking competitive performance. Powered by a 249cc reed-valve engine with modern Keihin fuel injection, it delivers sharp power delivery ideal for both training and racing. Known for its agile handling and proven reliability, the 250 SX excels in motocross competition and high-speed off-road riding.
- Capacity
- 249.0 ccm
- Engine
- Single, two-stroke
- Gearbox
- 5-speed
- Dry weight
- 99.4 kg
- Seat height
- 958 mm
- Power
- 24.9 HP (18.3 kW)
What’s new for the 2025 KTM 250 SX
vs the 2024| Spec | 2024 | 2025 |
|---|---|---|
| Front suspension | WP USD, 48 mm | WP XACT-USD (AER), Ø 48 mm |
| Rear suspension | WP monoshock PDS | WP XACT Monoshock with linkage |
| Wheelbase | 1475 mm (58.1 inches) | 1495 mm (58.9 inches) |
Other years
2000
2001
2002
2003
2004
2005
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
- Built purely for motocross track riding and racing, not for street use or general transportation.
- Built for
- Sharp, explosive, and razor-agile, this bike rewards aggressive riding and precise throttle control with rapid acceleration bursts and flickable handling.
- Not ideal for
- This is not suitable for commuting, touring, carrying passengers, or riders seeking a comfortable, low-maintenance everyday motorcycle.
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
- 249.0 ccm
- Power
- 24.9 HP (18.3 kW)
- Engine type
- Single, two-stroke
- Power/weight ratio
- 0.2505 HP/kg (dry)
- Bore x stroke
- 66.4 x 72.0 mm
- Cooling system
- Liquid
- Fuel system
- Injection
- Starting
- Electric
- Ignition
- Vitesco Technologies EMS
- Lubrication system
- Mixture oil lubrication 1:60
Transmission
- Gearbox
- 5-speed
- Transmission type
- Manual
- Final drive
- Chain
- Clutch
- Wet, DDS multi-disc clutch, Brembo hydraulics
Dimensions & weight
- Wheelbase
- 1495 mm
- Seat height
- 958 mm
- Dry weight
- 99.4 kg
- Fuel capacity
- 7.20 litres
- Ground clearance
- 354 mm
Chassis & suspension
- Frame
- Central double-cradle-type 25CrMo4 steel. Aluminum-reinforced polyamide subframe.
- Front suspension
- WP XACT-USD (AER), 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
- 116 mm
Brakes & wheels
- Front brakes
- Single disc
- Front brakes diameter
- 260 mm
- Rear brakes
- Single disc
- Rear brakes diameter
- 220 mm
- Front tyre
- 80/100-21
- Rear tyre
- 110/90-19
Other
- Color options
- Orange/black/grey
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 | 2000 | 2007 | 2014 | 2020 | 2025 | 2027 |
|---|---|---|---|---|---|---|
| Capacity | 249 cc | 249 cc | 249 cc | 249 cc | 249 cc | 249 cc |
| Dry weight | 101 kg | 98 kg | 96 kg | 96 kg | 99 kg | 96 kg |
| Seat height | 925 mm | 925 mm | 992 mm | 950 mm | 958 mm | 958 mm |
| Fuel capacity | 7.5 L | 7.5 L | 7.5 L | 7.5 L | 7.2 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 250 SX?
The 2025 KTM 250 SX has a Capacity of 249.0 ccm (15.19 cubic inches).
What engine power does the KTM 250 SX have?
The 2025 KTM 250 SX has a Power of 24.9 HP (18.3 kW).
How many gears does the KTM 250 SX have?
The 2025 KTM 250 SX has a Gearbox of 5-speed.
How much does the KTM 250 SX weigh?
The 2025 KTM 250 SX has a Dry weight of 99.4 kg (219.1 pounds).
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