2010KTM 250 SX

★ 5.0

34 fields on record

The 2010 KTM 250 SX is a lightweight two-stroke enduro machine designed for intermediate to advanced off-road riders seeking agile trail performance. Known for its potent 249cc single-cylinder engine and responsive handling, it excels in technical terrain and competitive racing environments. The liquid-cooled powerplant, coupled with a five-speed gearbox and hydraulic clutch, delivers the precision control and reliability serious riders demand.

Capacity: 249.0 ccm
Engine: Single, two-stroke
Gearbox: 5-speed
Dry weight: 95.4 kg
Seat height: 985 mm
Power: 24.9 HP (18.3 kW)

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What’s new for the 2010 KTM 250 SX

vs the 2009

Spec	2009	2010
Front suspension	WP USD, 48 mm	WP USD 48 mm fork
Rear suspension	WP monoshock PDS	WP PDS shock absorber

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 985mm, a rider of 175cm with a 79cm (estimated) inseam will not reach the ground comfortably on the 2010 KTM 250 SX, with a moderate knee angle of around 90 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 →

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Full specifications

Engine

Capacity: 249.0 ccm
Power: 24.9 HP (18.3 kW)
Engine type: Single, two-stroke
Power/weight ratio: 0.2610 HP/kg (dry)
Bore x stroke: 66.4 x 72.0 mm
Cooling system: Liquid
Fuel system: Carburettor
Starting: Kick
Ignition: Kokusan
Lubrication system: Mixture oil lubrication 1:60

Transmission

Gearbox: 5-speed
Transmission type: Manual
Final drive: Chain
Clutch: Wet mDouble disk clutch, operated hydraulically

Dimensions & weight

Wheelbase: 1475 mm
Seat height: 985 mm
Dry weight: 95.4 kg
Fuel capacity: 8.00 litres
Ground clearance: 385 mm

Chassis & suspension

Frame: Central double-cradle-type 25CrMo4
Front suspension: WP USD 48 mm fork
Rear suspension: WP PDS shock absorber
Front wheel travel: 300 mm
Rear wheel travel: 335 mm
Rake (fork angle): 26.5°
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

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	2010	2014	2020	2027
Capacity	249 cc	249 cc	249 cc	249 cc	249 cc	249 cc
Dry weight	101 kg	98 kg	95 kg	96 kg	96 kg	96 kg
Seat height	925 mm	925 mm	985 mm	992 mm	950 mm	958 mm
Fuel capacity	7.5 L	7.5 L	8 L	7.5 L	7.5 L	7.2 L