2023 KTM 250 SX Specifications

Name: 2023 KTM 250 SX
Brand: KTM

Cross / motocross • Specs last verified 13 July 2026

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2023 KTM 250 SX Overview

KTM 250 SX is a cross / motocross motorcycle, displacing 249 cc. Power comes from a Single cylinder, two-stroke engine. Bore and stroke come in at 66.4 x 72 mm. On the road, the 2023 250 SX tips the scales at 99.4 kg, carries a 7.20-litre fuel tank, offers a seat height of 958 mm and spans a 1495 mm wheelbase. The full 2023 KTM 250 SX spec sheet below covers every technical detail, from suspension travel to tyre sizes.

2023 250 SX - Pros & Cons

Strengths

Factory engineering: KTM built the 250 SX around a straightforward, purposeful specification rather than chasing any single standout feature.

Considerations

Tall seat height: At 958 mm, shorter riders will likely be on tiptoes at a standstill - worth sitting on one before you buy.
Modest fuel capacity: Range between stops is limited by the 7.20-litre tank - plan fuel stops accordingly on longer routes.
Chain final drive upkeep: Budget time for routine chain maintenance - it's cheap to replace but needs consistent attention to avoid premature sprocket wear.

Wear Points & Servicing Notes

Brake disc and pad wear

Braking up front comes from Single disc - solid stopping power, with disc and pad wear best checked on the same schedule as tyre changes.

Suspension condition on used examples

The 250 SX's suspension runs WP XACT-USD, Ø 48 mm at the front. The rear uses WP XACT Monoshock with linkage. Fork-seal condition and rear linkage play are the two things worth checking before buying used.

Final drive maintenance

The 250 SX uses chain final drive, which is cheap to replace but needs regular cleaning, lubrication and tension checks to get a full service life out of the sprockets.

Frame & chassis check

Built around a Central double-cradle-type 25CrMo4 steel, the 250 SX's chassis is straightforward to inspect: look for corrosion, cracks or repair welds around stress points like the head-stock and swingarm mounts.

Low-speed handling

99.4 kg keeps the 250 SX easy to move around in tight spaces, car parks and on the stand alike.

250 SX - Buying & Maintenance Guide

What to check before buying

Before handing over money for a used 2023 KTM 250 SX, cover the fundamentals: service book and oil change history, chain and sprocket wear, and any sign of oil weeping around the casings. Cold-starting it yourself tells you a lot - a healthy 250 SX should catch quickly and settle into a smooth idle.

Oil and filter changes

Nothing protects a 250 SX's engine like disciplined oil changes - stay on the manufacturer's schedule (roughly every 6,000 km or annually). Match the viscosity grade to what the owner's manual specifies, not what's cheapest.

2023 KTM 250 SX - Frequently Asked Questions

What engine does the 2023 KTM 250 SX have?

The 2023 KTM 250 SX uses a Single cylinder, two-stroke engine with 249 cc of displacement.

How much does the 2023 KTM 250 SX weigh?

The 2023 KTM 250 SX weighs 99.4 kg. This is the manufacturer's dry figure.

What is the fuel tank capacity of the 2023 KTM 250 SX?

The 2023 KTM 250 SX has a 7.20-litre fuel tank. At around 5-6 litres per 100 km, that is roughly 120-144 km between stops.

Is the 2023 KTM 250 SX suitable for shorter riders?

The 2023 KTM 250 SX has a seat height of 958 mm. This is towards the tall end of the spectrum and will require most riders under 175 cm to tiptoe at stops.

What brakes does the 2023 KTM 250 SX have?

The 2023 KTM 250 SX uses Single disc at the front and Single disc at the rear.

What tyre sizes does the 2023 KTM 250 SX use?

The front tyre size on the 2023 KTM 250 SX is 80/100-21.

What suspension does the 2023 KTM 250 SX have?

The 2023 KTM 250 SX uses WP XACT-USD, Ø 48 mm up front and WP XACT Monoshock with linkage at the rear.

KTM 250 SX Spec Evolution

The KTM 250 SX was produced across 22 model years (2000-2023). The table below highlights the key specifications that changed across the production run - useful whether you are comparing years or tracking down a specific variant.

Specification	2000	2003	2004	2005	2006	2007	2008	2009	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020	2021	2022	2023
Wet Weight	-	-	-	-	-	-	-	-	-	104.0 kg / 229.3 lbs	292.1 kg / 643.9 lbs	-	112.0 kg / 246.9 lbs	-	-	-	-	-	-	-	-	-
Dry Weight	101 kg / 222.7 lbs	97.2 kg / 214.3 lbs	97.7 kg / 215.4 lbs	97.7 kg / 215.4 lbs	97.7 kg / 215.4 lbs	97.7 kg / 215.4 lbs	95.4 kg / 210.3 lbs	95.4 kg / 210.3 lbs	95.4 kg / 210.3 lbs	93.8 kg / 206.8 lbs	97 kg / 213.8 lbs	97 kg / 213.8 lbs	96.3 kg / 212.3 lbs	96.3 kg / 212.3 lbs	95.9 kg / 211.4 lbs	95.4 kg / 210.3 lbs	95.4 kg / 210.3 lbs	95 kg / 209.4 lbs	95.5 kg / 210.5 lbs	87.5 kg / 192.9 lbs	95.5 kg / 210.5 lbs	99.4 kg / 219.1 lbs
Engine Detail	-	-	-	-	-	-	-	-	-	TVC power valve	Reed intake and exhaust control	Reed intake.	Reed intake.	Reed intake.	Reed intake.	Reed intake.	Reed intake	Reed intake	Reed intake	Reed intake	Reed intake	Reed intake
Engine Type	Single cylinder	Single cylinder	Single cylinder	Single cylinder	Single cylinder	Single cylinder	Single cylinder	Single cylinder	Single cylinder, two-stroke	Single cylinder, two-stroke	Single cylinder, two-stroke	Single cylinder, two-stroke	Single cylinder, two-stroke	Single cylinder, two-stroke	Single cylinder, two-stroke	Single cylinder, two-stroke	Single cylinder, two-stroke	Single cylinder, two-stroke	Single cylinder, two-stroke	Single cylinder, two-stroke	Single cylinder, two-stroke	Single cylinder, two-stroke
Seat Height	-	925 mm / 36.4 in.	925 mm / 36.4 in.	925 mm / 36.4 in.	925 mm / 36.4 in.	925 mm / 36.4 in.	960 mm / 37.8 in.	985 mm / 38.8 in.	985 mm / 38.8 in.	985 mm / 38.8 in.	992 mm / 39.1 in.	992 mm / 39.1 in.	992 mm / 39.1 in.	992 mm / 39.1 in.	992 mm / 39.1 in.	992 mm / 39.1 in.	960 mm / 37.8 in.	960 mm / 37.8 in.	950 mm / 37.4 in.	850 mm / 33.5 in.	850 mm / 33.5 in.	958 mm / 37.7 in.
Fuel Capacity	7.50 litres / 1.98 gallons	7.50 litres / 1.98 gallons	7.50 litres / 1.98 gallons	7.50 litres / 1.98 gallons	7.50 litres / 1.98 gallons	7.50 litres / 1.98 gallons	7.50 litres / 1.98 gallons	8.00 litres / 2.11 gallons	8.00 litres / 2.11 gallons	7.50 litres / 1.98 gallons	7.50 litres / 1.98 gallons	7.50 litres / 1.98 gallons	7.50 litres / 1.98 gallons	7.50 litres / 1.98 gallons	7.00 litres / 1.85 gallons	7.00 litres / 1.85 gallons	7.00 litres / 1.85 gallons	7.00 litres / 1.85 US gallons	7.50 litres / 1.98 US gallons	7.50 litres / 1.98 US gallons	7.50 litres / 1.98 US gallons	7.20 litres / 1.90 US gallons
Displacement (cc)	249.00 cc	249.00 cc	249.00 cc	249.00 cc	249.00 cc	249.00 cc	249.00 cc	249.00 cc	249.00 cc	249.00 cc	249.00 cc	249.00 cc	249.00 cc	249.00 cc	249.00 cc	249.00 cc	249.00 cc	249.0 cc	249.0 cc	249.0 cc	249.0 cc	249.0 cc
Ground Clearance (in.)	-	15.2 inches	15.2 inches	15.2 inches	15.2 inches	15.2 inches	15.2 inches	15.2 inches	15.2 inches	15.2 inches	15.2 inches	15.2 inches	15.2 inches	15.2 inches	15.2 inches	15.2 inches	14.8 inches	14.8 inches	14.8 inches	14.8 inches	14.8 inches	13.9 inches

Key Specifications

Engine

Single cylinder, two-stroke

Power

Not published by manufacturer

Torque

Not published by manufacturer

Top Speed

Not published by manufacturer

Weight

99.4 kg / 219.1 lbs

Fuel Capacity

7.20 litres / 1.90 US gallons

Full 2023 KTM 250 SX Specifications

Colours Orange/white/grey

Ground Clearance (in.) 13.9 inches

Ground Clearance (mm) 354 mm

Seat Height 958 mm / 37.7 in.

Wheelbase 1495 mm / 58.9 in.

Dry Weight 99.4 kg / 219.1 lbs

Fuel Capacity 7.20 litres / 1.90 US gallons

Bore x Stroke (in,) 2.6 x 2.8 inches

Bore x Stroke (mm) 66.4 x 72.0 mm

Displacement (cc) 249.0 cc

Displacement (ci) 15.19 cubic inches

Engine Type Single cylinder, two-stroke

Engine Detail Reed intake

Ignition Vitesco Technologies EMS

Starter Electric

Clutch Wet, DDS multi-disc clutch, Brembo hydraulics

Final Drive Chain (final drive)

Gearbox 5-speed

Primary Drive 5/8 x 1/4´ chain.

Frame Type Central double-cradle-type 25CrMo4 steel

Suspension - Front WP XACT-USD, Ø 48 mm

Suspension - Rear WP XACT Monoshock with linkage

Rake 26.1°

Wheel Travel - Front 310 mm / 12.2 in.

Wheel Travel - Rear 300 mm / 11.8 in.

Brakes - Front Single disc

Brakes - Rear Single disc

Rims CNC machined hubs. Excel rims. Wire spoked. Dunlop Geomax MX 3S tires.

Tyres - Front 80/100-21

Specifications are compiled from manufacturer documentation and cross-referenced technical sources, and corrected on an ongoing basis. Spot an error? Let us know.