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Motocross Bikes

2023KTM 250 SX

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The 2023 KTM 250 SX is a lightweight two-stroke motocross bike engineered for junior and intermediate riders seeking aggressive performance on the track. Its potent 249cc single-cylinder engine delivers explosive power delivery characteristic of two-stroke technology, while the nimble steel frame and responsive geometry make it renowned for exceptional maneuverability and handling in competitive racing environments.

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)

⇄ Compare with another bike All model years

What’s new for the 2023 KTM 250 SX

vs the 2022

Spec	2022	2023
Dry weight	95.5 kg (210.5 pounds)	99.4 kg (219.1 pounds)
Seat height	850 mm (33.5 inches)	958 mm (37.7 inches)
Fuel capacity	7.50 litres (1.98 US gallons)	7.20 litres (1.90 US gallons)

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

Off-road & trail98%

Cornering90%

City riding5%

Daily riding5%

Touring8%

Two-up0%

Track85%

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?

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Your height

Inseam (optional)

Units

At 958mm, a rider of 68.9" with a 31" (estimated) inseam will not reach the ground comfortably on the 2023 KTM 250 SX, with a cramped knee angle of around 85 degrees and an upright riding position.

Assumes about 30mm of suspension sag once seated. This is an approximation from category-typical geometry, not a measurement of this bike or of you - sit on one before you buy.

More bikes at over 900 mm — Sky High →

Find bikes that fit your height →

Full specifications

Engine

Capacity: 249.0 ccm
Power: 24.9 HP (18.3 kW)
Engine type: Single, two-stroke
Power/weight ratio: 0.2505 HP/kg
Bore x stroke: 66.4 x 72.0 mm
Cooling system: Liquid
Fuel system: Carburettor
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
Front suspension: WP XACT-USD, Ã˜ 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/white/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	2023	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

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MotorcycleDB Review

The 2023 KTM 250 SX is a powerful and lightweight motocross bike that delivers exceptional performance on the track. With its state-of-the-art engine and top-notch suspension system, this bike offers riders the ultimate combination of speed and control. The sleek design and advanced technology make it a top choice for motocross enthusiasts who are looking for a high-performance machine that can handle the toughest terrain.

Overall, the 2023 KTM 250 SX is a top-of-the-line motocross bike that delivers on both power and handling. With its impressive engine and advanced suspension system, this bike is designed to give riders a competitive edge on the track. Whether you're a seasoned rider or just starting out in the sport, the 2023 KTM 250 SX is a top choice for anyone looking for a high-performance motocross bike that can handle the demands of intense off-road riding.