What category is the 2021 KTM 50 SX?

The 2021 KTM 50 SX has a Category of Minibike, cross.

What is the engine size of the 2021 KTM 50 SX?

The 2021 KTM 50 SX has a Capacity: of 49.0 ccm (2.99 cubic inches).

What type of engine does the 2021 KTM 50 SX have?

The 2021 KTM 50 SX has a Engine type of Single cylinder, two-stroke.

How many gears does the 2021 KTM 50 SX have?

The 2021 KTM 50 SX has a Gearbox of Automatic.

How much does the 2021 KTM 50 SX weigh?

The 2021 KTM 50 SX has a Dry weight of 41.5 kg (91.5 pounds).

What is the seat height of the 2021 KTM 50 SX?

The 2021 KTM 50 SX has a Seat height of 684 mm (26.9 inches) If adjustable, lowest setting..

KTM 50 SX - 2021 Specifications and Reviews

Name: 2021 KTM 50 SX
Brand: KTM

The 2021 KTM 50 SX is a competitive mini off-road motorcycle designed for young riders aged 4-8 years old entering motocross. Featuring a lightweight 49cc two-stroke engine with automatic clutch and modern WP suspension, it combines KTM's racing heritage with beginner-friendly handling. Best known for its aggressive styling and reliable performance on dirt tracks and trails.

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2021

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Engine and Transmission Specifications
Clutch	Centrifugal
Transmission type	Chain (final drive)
Gearbox	Automatic
Fuel control	Double Overhead Cams/Twin Cam (DOHC)
Bore x Stroke	39.5 x 40.0 mm (1.6 x 1.6 inches)
Engine type	Single cylinder, two-stroke
Capacity:	49.0 ccm (2.99 cubic inches)

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Category	Minibike, cross
Year	2021
Model	KTM 50 SX

Brakes, suspension, Frame and wheels
Rear brakes	Single disc
Diameter	160 mm (6.3 inches)
Front brakes	Single disc
Rear wheel travel	180 mm (7.1 inches)
Rear Suspension	XACT WP mono shock
Front wheel travel	205 mm (8.1 inches)
Front Suspension	XACT 35 WP Upside-Down fork, Ã˜ 35 mm
Rake (fork angle)	24.0°
Frame type	25CrMo4 steel central-tube frame

Physical measures and capacities
Fuel capacity	2.30 litres (0.61 US gallons)
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
Starter	Kick
Color options	White/Orange

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.

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Rider Reviews

Total comments: 1

MotorcycleDB Review

The 2021 KTM 50 SX is a top-of-the-line dirt bike designed for young riders who are ready to take their skills to the next level. With its powerful 2-stroke engine and lightweight chassis, this motorcycle offers impressive speed and control on the track. The adjustable suspension and hydraulic disc brakes provide a smooth and responsive ride, giving young racers the confidence to tackle even the toughest terrain. As a parent, I appreciate the high level of safety features included in the 2021 KTM 50 SX, making it a reliable choice for young riders to develop their skills while staying protected. Overall, the 2021 KTM 50 SX is an outstanding motorcycle that combines speed, agility, and safety in one impressive package. Young riders will love the thrills it provides on the track, while parents can have peace of mind knowing their child is riding a well-built and reliable bike. Whether your child is just starting out in the world of dirt biking or is already a seasoned competitor, the 2021 KTM 50 SX is a fantastic choice for riders of all skill levels.