What category is the 2020 KTM 50 SX?

General information
Year	2020

Engine and Transmission Specifications
Clutch	Centrifugal clutch
Transmission type	Chain (final drive)
Gearbox	1-speed
Cooling system	Liquid
Lubrication system	Mixture oil lubrication
Ignition	Seletra 2p D36
Fuel system	Carburettor. Mikuni TMX
Bore x Stroke	39.5 x 40.0 mm (1.6 x 1.6 inches)
Engine details	Reed intake
Engine type	Single cylinder, two-stroke
Capacity:	49.0 ccm (2.99 cubic inches)


Category	Cross / motocross
Model	KTM 50 SX
Brakes, suspension, Frame and wheels
Wheels	Wire spoked
Rear brakes	Single disc. Two-piston calipers.
Diameter	160 mm (6.3 inches)
Front brakes	Single disc. Four-piston calipers.
Rear wheel travel	185 mm (7.3 inches)
Rear Suspension	WP shock absorber
Front wheel travel	205 mm (8.1 inches)
Front Suspension	WP upside-down Ã˜ 35 mm
Rake (fork angle)	24.0°
Frame type	Central-tube frame with double-cradle
Physical measures and capacities
Fuel capacity	2.30 litres (0.61 US gallons)
Wheelbase	1032 mm (40.6 inches)
Ground clearance	252 mm (9.9 inches)
Seat height	684 mm (26.9 inches) If adjustable, lowest setting.
Dry weight	41.5 kg (91.5 pounds)
Other specs
Maintenance	Find parts, fluids, filters, maintenance tools and service items on eBay
Comments	The engine power can be restricted to 5.5 hp with a kit.
Starter	Kick
Color options	Orange/white/black

Performance Profile & Rider Fit

Best For

Track55%

City5%

Cornering60%

Daily Riding5%

Touring5%

Passenger0%

Rider Profile

Best For	This is a first motorcycle built for young children just starting out in motocross, not for teen or adult riders of any skill level.
Purpose	It exists purely to teach a child the fundamentals of balance, throttle control, and off-road riding in a safe, low-powered package.
Rider Fit	Its very low 653 mm seat height and lightweight small-bore chassis are sized specifically for small children, with an adjustable centrifugal clutch to tailor power delivery to their skill.
Character	It behaves like a purpose-built miniature dirt bike, docile and forgiving with an automatic single-speed gearbox that removes clutch and shifting complexity so a child can focus on riding.
Not Ideal For	It is not suitable for adults, taller teens, road use, touring, or anyone seeking real speed or highway capability.

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

Rider Fit Visualizer

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Inseam (optional)

Units

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Feet:

At 684mm, a rider of 68.9" with a 31" (estimated) inseam will reach the ground with both feet flat on the 2020 KTM 50 SX, with a cramped knee angle of around 55 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.

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