What category is the 2013 KTM 125 SX?

The 2013 KTM 125 SX has a Category of Cross / motocross.

What is the engine size of the 2013 KTM 125 SX?

The 2013 KTM 125 SX has a Capacity: of 124.80 ccm (7.62 cubic inches).

What type of engine does the 2013 KTM 125 SX have?

The 2013 KTM 125 SX has a Engine type of Single cylinder, two-stroke.

Is the 2013 KTM 125 SX air cooled or liquid cooled?

The 2013 KTM 125 SX has a Cooling system of Liquid.

How many gears does the 2013 KTM 125 SX have?

The 2013 KTM 125 SX has a Gearbox of 6-speed.

How much does the 2013 KTM 125 SX weigh?

The 2013 KTM 125 SX has a Dry weight of 90.8 kg (200.2 pounds).

What is the seat height of the 2013 KTM 125 SX?

The 2013 KTM 125 SX has a Seat height of 992 mm (39.1 inches) If adjustable, lowest setting..

KTM 125 SX - 2013 Specifications and Reviews

The 2013 KTM 125 SX is a lightweight two-stroke motocross bike engineered for young and intermediate riders developing their skills on the track. Its compact 125cc engine delivers sharp throttle response and agile handling through tight corners, while the liquid-cooled single-cylinder design ensures reliable performance. Known for its responsive powerband and nimble chassis, this machine excels in technical terrain and represents KTM's commitment to entry-level motocross racing.

⇄ Compare against another bike 📅 All Years

2013

Add/Upload pictures for this motorcycle

General information
Category	Cross / motocross
Year	2013
Model	KTM 125 SX

Engine and Transmission Specifications
Driveline	13:50. Primary drive: 23:73.
Clutch	Wet multi-disc clutch / hydraulically operated
Transmission type,final drive	Chain
Gearbox	6-speed
Cooling system	Liquid
Ignition	Contactless, controlled, fully electronic ignition system with digital ignition timing adjustment, type Kokusan
Bore x stroke	54.0 x 54.5 mm (2.1 x 2.1 inches)
Engine details	Reed intake.
Engine type	Single cylinder, two-stroke
Capacity:	124.80 ccm (7.62 cubic inches)
Brakes, suspension, Frame and wheels
Rear brakes diameter	210 mm (8.3 inches)
Rear brakes	Single disc. Two-piston calipers.
Front brakes diameter	220 mm (8.7 inches)
Front brakes	Single disc. Four-piston calipers.
Rear suspension travel	185 mm (7.3 inches)
Rear suspension	WP Suspension 5018 BAVP DCC
Front suspension travel	205 mm (8.1 inches)
Front suspension	WP Suspension Up Side Down 4860 MXMA CC
Rake (fork angle)	26.5°
Frame type	Central tube frame made of chrome molybdenum steel tubing
Physical measures and capacities
Fuel capacity	7.50 litres (1.98 gallons)
Wheelbase	1,480 mm (58.3 inches)
Ground clearance	395 mm (15.6 inches)
Seat height	992 mm (39.1 inches) If adjustable, lowest setting.
Dry weight	90.8 kg (200.2 pounds)
Other specs
Maintenance	Find parts, fluids, filters, maintenance tools and service items on eBay
Color options	Orange/black
Starter	Kick

Performance Profile & Rider Fit

Best For

Track95%

City10%

Cornering90%

Daily Riding10%

Touring8%

Passenger5%

Rider Profile

Best For	This is a full-on motocross competition bike best suited to intermediate through expert off-road riders, not beginners or casual road riders.
Purpose	Built purely for closed-course motocross racing, it excels at jumps, berms, and rapid direction changes on dirt tracks rather than any street use.
Rider Fit	The tall 958 mm seat height, aggressive ergonomics, and demanding 2-stroke power delivery require good rider fitness, strength, and prior dirt bike experience.
Character	Light, explosive, and razor-sharp in handling, it rewards aggressive riding with a peaky two-stroke power band and minimal weight to manage.
Not Ideal For	It is not suitable for commuting, highway travel, passengers, or riders seeking comfort, storage, or a forgiving low-end power delivery.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Fit Visualizer

2013 KTM 125 SX Rider Ergonomics Assessment

Your height

Inseam (optional)

Units

Calculated in your browser only - your height/inseam are never sent to our servers.

Feet:

At 992mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with cannot reach comfortably on the 2013 KTM 125 SX, with a moderate knee angle of around 90 degrees and an upright riding position.

Data quality: measured. Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

Find bikes that fit your height →