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Motocross Bikes

2020KTM 250 SX

★ 5.0
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The 2020 KTM 250 SX is a lightweight 2-stroke motocross bike engineered for intermediate to advanced amateur racers and competitive weekend warriors. It delivers aggressive power delivery and nimble handling through its compact 95.5 kg frame, making it ideal for technical track conditions. The bike is best known for its potent engine performance and responsive WP suspension geometry that reward aggressive riding styles.

Capacity
249.0 ccm
Engine
Single, two-stroke
Gearbox
5-speed
Dry weight
95.5 kg
Seat height
950 mm
Power
24.9 HP (18.3 kW)
⇄ Compare with another bike + Add to garage All model years

What’s new for the 2020 KTM 250 SX

vs the 2019
Spec20192020
Seat height 960 mm (37.8 inches) 950 mm (37.4 inches)
Fuel capacity 7.00 litres (1.85 US gallons) 7.50 litres (1.98 US gallons)
Front suspension WP-USD, AER 48, Ø 48 mm WP XACT-USD, Ø 48 mm
Rear suspension WP shock absorber with linkage WP XACT Monoshock with linkage
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
Speed 56Agility 90Comfort 30Off-road 98Touring 10Road manners 15
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?

Worked out in your browser - nothing is sent to us
At 950mm, a rider of 68.9" with a 31" (estimated) inseam will not reach the ground comfortably on the 2020 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
0.2607 HP/kg (dry)
Bore x stroke
66.4 x 72.0 mm
Cooling system
Liquid
Fuel system
Carburettor
Starting
Kick
Ignition
Contactless, controlled, fully electronic ignition system with digital ignition timing adjustment, type Kokusan
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
950 mm
Dry weight
95.5 kg
Fuel capacity
7.50 litres
Ground clearance
375 mm
Chassis & suspension
Frame
Chrome-molybdenum steel central-tube
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)
26.5°
Trail
116 mm
Brakes & wheels
Front brakes
Single disc. Four-piston calipers.
Front brakes diameter
260 mm
Rear brakes
Single disc. Two-piston calipers.
Rear brakes diameter
220 mm
Front tyre
80/100-21
Rear tyre
110/90-19
Other
Color options
Orange/white/black

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 20002007201420202027
Capacity 249 cc 249 cc 249 cc 249 cc 249 cc
Dry weight 101 kg 98 kg 96 kg 96 kg 96 kg
Seat height 925 mm 925 mm 992 mm 950 mm 958 mm
Fuel capacity 7.5 L 7.5 L 7.5 L 7.5 L 7.2 L

Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.

Rider Reviews

5.0
★★★★★
Rider rating
MotorcycleDB

The 2020 KTM 250 SX is a high-performance motocross bike that delivers exceptional power and handling. With a lightweight frame and powerful 250cc engine, this motorcycle is designed for optimal agility and speed on the track. The bike's advanced suspension system and advanced braking technology make it easy to maneuver through tight corners and accelerate with confidence. Whether you're a seasoned racer or a beginner looking to upgrade to a high-performance bike, the 2020 KTM 250 SX is a top choice for riders who want to dominate the motocross circuit.

Overall, the 2020 KTM 250 SX is a top-notch motocross bike that offers impressive performance and handling. Its lightweight frame and powerful 250cc engine make it a top choice for riders who want to dominate the track. With advanced suspension and braking technology, this motorcycle is designed for optimal agility and speed, making it a great option for both seasoned racers and beginners looking to upgrade to a high-performance bike. If you're looking for a competitive edge in motocross racing, the 2020 KTM 250 SX is the bike for you.

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Common questions

What is the engine size of the KTM 250 SX?

The 2020 KTM 250 SX has a Capacity of 249.0 ccm (15.19 cubic inches).

What engine power does the KTM 250 SX have?

The 2020 KTM 250 SX has a Power of 24.9 HP (18.3 kW).

How many gears does the KTM 250 SX have?

The 2020 KTM 250 SX has a Gearbox of 5-speed.

How much does the KTM 250 SX weigh?

The 2020 KTM 250 SX has a Dry weight of 95.5 kg (210.5 pounds).

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