What category is the 2009 KTM 50 SX Junior?

The 2009 KTM 50 SX Junior has a Category of Minibike, cross.

What is the engine size of the 2009 KTM 50 SX Junior?

The 2009 KTM 50 SX Junior has a Capacity: of 49.00 ccm (2.99 cubic inches).

What type of engine does the 2009 KTM 50 SX Junior have?

The 2009 KTM 50 SX Junior has a Engine type of Single cylinder.

Is the 2009 KTM 50 SX Junior air cooled or liquid cooled?

The 2009 KTM 50 SX Junior has a Cooling system of Liquid.

How many gears does the 2009 KTM 50 SX Junior have?

The 2009 KTM 50 SX Junior has a Gearbox of Automatic.

How much does the 2009 KTM 50 SX Junior weigh?

The 2009 KTM 50 SX Junior has a Dry weight of 37.6 kg (82.9 pounds).

What is the seat height of the 2009 KTM 50 SX Junior?

The 2009 KTM 50 SX Junior has a Seat height of 607 mm (23.9 inches) If adjustable, lowest setting..

KTM 50 SX Junior - 2009 Specifications and Reviews

The 2009 KTM 50 SX Junior is an entry-level minibike designed for young riders beginning their off-road journey. Powered by a liquid-cooled 49cc two-stroke engine with automatic transmission, it delivers accessible performance and easy handling. Known for its reliability and aggressive styling, the SX Junior remains the ideal choice for aspiring motocross competitors aged 4-8 years.

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2009

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Engine and Transmission Specifications
Clutch	Centrifugal clutch (adjustable)
Gearbox	Automatic
Cooling system	Liquid
Lubrication system	Mixture lubrication
Starter	Kick
Ignition	Seletra analogue
Fuel system	Carburettor. Dell´Orto PHVA 14 DS
Bore x stroke	39.5 x 40.0 mm (1.6 x 1.6 inches)
Compression	12.5:1
Stroke	2
Engine type	Single cylinder
Capacity:	49.00 ccm (2.99 cubic inches)
Physical measures and capacities
Wheelbase	910 mm (35.8 inches)
Ground clearance	220 mm (8.7 inches)
Seat height	607 mm (23.9 inches) If adjustable, lowest setting.
Dry weight	37.6 kg (82.9 pounds)

KTM 50 SX Junior dimensions and frame
Exhaust system	Aluminium
Rear brakes diameter	140 mm (5.5 inches)
Rear brakes	Single disc
Front brakes diameter	160 mm (6.3 inches)
Front brakes	Single disc
Rear tyre dimensions	2.75-10
Front tyre dimensions	2.5-10
Rear suspension travel	125 mm (4.9 inches)
Rear suspension	WP monoshock
Front suspension travel	205 mm (8.1 inches)
Front suspension	Marzocchi
Trail	140 mm (5.5 inches)
Rake (fork angle)	24.0°
Frame type	Central double-cradle-type frame. Steel subframe.

Speed and acceleration
Color options	Orange/black
Fuel capacity	2.30 litres (0.61 gallons)

Category	Minibike, cross
Year	2009
Model	KTM 50 SX Junior
Other specs
Maintenance	Find parts, fluids, filters, maintenance tools and service items on eBay

Performance Profile & Rider Fit

Best For

Track10%

City5%

Cornering30%

Daily Riding5%

Touring5%

Passenger0%

Rider Profile

Best For	This is a first-motorcycle machine built specifically for very young children just starting to learn balance and throttle control, not for riders with any prior experience expectations.
Purpose	It exists purely to teach small children the basics of off-road motorcycling in a safe, low-power, automatic-clutch package.
Rider Fit	Its tiny 607mm seat height, sub-40kg dry weight, and automatic centrifugal clutch make it suitable only for young kids, typically around 4 to 6 years old.
Character	Simple, forgiving, and non-intimidating, this minibike is designed to build confidence with gentle power delivery and no manual shifting required.
Not Ideal For	It is not suitable for teenagers, adults, road use, or anyone seeking real speed, power, or long-distance capability.

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