2006KTM 250 SX

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The 2006 KTM 250 SX is a lightweight motocross bike designed for intermediate to advanced amateur riders seeking competitive performance on the track. Powered by a liquid-cooled 249cc single-cylinder four-stroke engine with a five-speed gearbox, it delivers impressive power delivery and agile handling. Known for its durability and responsive hydraulic clutch, the 250 SX became a popular choice for serious motocross enthusiasts and aspiring professionals.

Capacity: 249.0 ccm
Engine: Single, two-stroke
Gearbox: 5-speed
Dry weight: 97.7 kg
Seat height: 925 mm
Power: 24.9 HP (18.3 kW)

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What’s new for the 2006 KTM 250 SX

vs the 2005

Spec	2005	2006
Front suspension	WP-USD 48 mm (1.89´)	WP-USD 48 mm (1.89 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

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 925mm, a rider of 68.9" with a 31" (estimated) inseam will not reach the ground comfortably on the 2006 KTM 250 SX, with a cramped knee angle of around 80 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: 0.2549 HP/kg (dry)
Bore x stroke: 66.4 x 72.0 mm
Cooling system: Liquid
Fuel system: Carburettor
Starting: Kick
Ignition: Kokusan digital 2K-1
Lubrication system: Mixture oil lubrication 1:60

Transmission

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

Dimensions & weight

Wheelbase: 1475 mm
Seat height: 925 mm
Dry weight: 97.7 kg
Fuel capacity: 7.50 litres
Ground clearance: 385 mm

Chassis & suspension

Frame: Central double-cradle-type 25 CrMo4
Front suspension: WP-USD 48 mm (1.89 inches)
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

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	2006	2007	2014	2020	2027
Capacity	249 cc	249 cc	249 cc	249 cc	249 cc	249 cc
Dry weight	101 kg	98 kg	98 kg	96 kg	96 kg	96 kg
Seat height	925 mm	925 mm	925 mm	992 mm	950 mm	958 mm
Fuel capacity	7.5 L	7.5 L	7.5 L	7.5 L	7.5 L	7.2 L