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Motocross Bikes

2013KTM 50 SX Mini

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The 2013 KTM 50 SX Mini is a lightweight minibike engineered for young riders learning off-road fundamentals. Powered by a responsive 49cc two-stroke engine with automatic clutch, it delivers controllable power ideal for children developing riding skills. The bike is renowned for its reliability, handling characteristics, and role as an entry point to competitive motocross racing.

Capacity
49.0 ccm
Engine
Single, two-stroke
Gearbox
1-speed
Dry weight
40.5 kg
Seat height
558 mm
Power
5.4 HP (4.0 kW)
⇄ Compare with another bike + Add to garage All model years

What’s new for the 2013 KTM 50 SX Mini

vs the 2012
Spec20122013
Rear suspension WPSuspension3614 BAEM WP Suspension 3614 BAEM
Other years 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024

How it rides

Editorial estimate from the spec sheet - not lab tested
Speed 4Agility 64Comfort 20Off-road 55Touring 2Road manners 5
Off-road & trail55%
Cornering40%
City riding2%
Daily riding3%
Touring1%
Two-up0%
Track30%
Best for
It exists purely to teach small children the basics of throttle control, balance, and off-road riding on a real motocross-style bike in a safe, controlled way.
Built for
It behaves like a proper miniature motocrosser, with real suspension, a real frame, and real brakes, giving a authentic but gentle introduction to dirt bike riding.
Not ideal for
It is completely unsuitable for adults, teenagers, road use, touring, or any rider who has outgrown beginner-level youth motocross machines.

Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.

Will it fit you?

Worked out in your browser - nothing is sent to us
At 558mm, a rider of 68.9" with a 31" (estimated) inseam will reach the ground with both feet flat on the 2013 KTM 50 SX Mini, with a cramped knee angle of around 45 degrees and a slightly forward riding position.

Assumes about 30mm of suspension sag once seated. This is an approximation from category-typical geometry, not a measurement of this bike or of you - sit on one before you buy.

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Full specifications

Engine
Capacity
49.0 ccm
Power
5.4 HP (4.0 kW)
Engine type
Single, two-stroke
Power/weight ratio
0.1333 HP/kg (dry)
Bore x stroke
39.5 x 40.0 mm
Cooling system
Liquid
Fuel system
Carburettor
Starting
Kick
Ignition
SELETTRA 2p D36
Lubrication system
Separate lubrication
Transmission
Gearbox
1-speed
Transmission type
Manual
Final drive
Chain
Clutch
3-lining automatic clutch on the main shaft / centrifugal force
Dimensions & weight
Wheelbase
914 mm
Seat height
558 mm
Dry weight
40.5 kg
Fuel capacity
2.00 litres
Ground clearance
184 mm
Chassis & suspension
Frame
Central tube frame of chrome molybdenum steel tubing, powder-coated
Front suspension
WP Suspension USD 35
Rear suspension
WP Suspension 3614 BAEM
Front wheel travel
100 mm
Rear wheel travel
171 mm
Rake (fork angle)
22.6°
Brakes & wheels
Front brakes
Single disc. Four-pot brake caliper
Front brakes diameter
160 mm
Rear brakes
Single disc. Two-pot brake caliper
Rear brakes diameter
140 mm
Other
Color options
Orange/black/white

Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.

What changed, year to year

Differences highlighted
Specification 201220132015201820212024
Capacity 49 cc 49 cc 49 cc 49 cc 50 cc 50 cc
Dry weight 41 kg 41 kg 39 kg 40 kg 40 kg 44 kg
Seat height 558 mm 558 mm 558 mm 558 mm 558 mm 653 mm
Fuel capacity 2 L 2 L 2 L 2.3 L 2.1 L 2.3 L

Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.

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Common questions

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

The 2013 KTM 50 SX Mini has a Capacity of 49.0 ccm (2.99 cubic inches).

What engine power does the KTM 50 SX Mini have?

The 2013 KTM 50 SX Mini has a Power of 5.4 HP (4.0 kW).

How many gears does the KTM 50 SX Mini have?

The 2013 KTM 50 SX Mini has a Gearbox of 1-speed.

How much does the KTM 50 SX Mini weigh?

The 2013 KTM 50 SX Mini has a Dry weight of 40.5 kg (89.3 pounds).

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