MotoSpecs

2023 KTM 50 SX Specifications

Minibike, cross

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2023 KTM 50 SX Overview

The 2023 KTM 50 SX is a minibike, cross motorcycle built around 49 cc of displacement. Under the tank sits a Single cylinder, two-stroke engine. The bore and stroke measures 39.5 x 40 mm. From a practical standpoint, the 2023 50 SX tips the scales at 41.5 kg, carries a 2.30-litre fuel tank and offers a seat height of 665 mm. Scroll down for the complete 2023 KTM 50 SX spec sheet covering every technical detail from suspension travel to tyre sizes.

2023 50 SX - Pros & Cons

Strengths

  • Accessible seat height: At 665 mm, the seat height is approachable for a wide range of rider heights and builds confidence in low-speed manoeuvring.

Considerations

  • Carburetor fuelling: Carbureted engines need occasional jetting attention and can be reluctant in cold weather or at altitude compared to modern fuel-injected alternatives.

Owner Experiences & Common Issues

Carburetor maintenance

Carburetors on the 2023 KTM 50 SX benefit from a clean and re-jet if the bike has been stored, run on stale fuel, or modified with an aftermarket exhaust. Owners frequently mention that fresh jets and float needle clips transforms throttle response from flat to crisp.

50 SX - Buying & Maintenance Guide

What to check before buying

When inspecting a used 2023 KTM 50 SX, start with the basics: check the service book for oil change frequency, inspect the chain and sprockets for wear, and look for oil seepage around the engine casings and rocker covers. A cold start test is invaluable - a well-maintained 50 SX should fire up cleanly and settle to a smooth idle within a few seconds.

Oil and filter changes

Regular oil changes are the single most important maintenance task on any 50 SX. Stick to the manufacturer's interval - typically every 6,000 km or once a year, whichever comes first. Always use the correct viscosity grade as specified in the owner's manual.

Carburetor upkeep

Keep the carburetors clean and free of deposits. If the 50 SX has been stored, strip and clean the carb float bowls before attempting to start it. Pilot jets are the first to block and the last to be checked - always include them in any carb rebuild.

2023 KTM 50 SX - Frequently Asked Questions

What engine does the 2023 KTM 50 SX have?
The 2023 KTM 50 SX uses a Single cylinder, two-stroke engine with 49 cc of displacement.
How much does the 2023 KTM 50 SX weigh?
The 2023 KTM 50 SX weighs 41.5 kg. This is the manufacturer's dry figure.
What is the fuel tank capacity of the 2023 KTM 50 SX?
The 2023 KTM 50 SX has a 2.30-litre fuel tank.
Is the 2023 KTM 50 SX suitable for shorter riders?
The 2023 KTM 50 SX has a seat height of 665 mm. This is a comfortable, accessible height for most riders.
What brakes does the 2023 KTM 50 SX have?
The 2023 KTM 50 SX uses Single disc at the front and Single disc at the rear.
What fuel system does the 2023 KTM 50 SX use?
The 2023 KTM 50 SX uses Carburettor, providing precise fuelling across the rev range and reliable cold-start behaviour.
What suspension does the 2023 KTM 50 SX have?
The 2023 KTM 50 SX uses XACT 35 WP Upside-Down fork, Ø 35 mm up front and XACT WP PDS mono shock at the rear.

KTM 50 SX Spec Evolution

The KTM 50 SX was produced across 17 model years (2006-2023). The table below highlights the key specifications that changed across the production run - useful whether you are comparing years or tracking down a specific variant.

Specification 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2021 2022 2023
Wet Weight - - - - - 104.0 kg / 229.3 lbs - - 112.0 kg / 246.9 lbs - - - - - - - -
Dry Weight 38.8 kg / 85.5 lbs 38.8 kg / 85.5 lbs 38.8 kg / 85.5 lbs 39.8 kg / 87.7 lbs 39.8 kg / 87.7 lbs 39.8 kg / 87.7 lbs 41.5 kg / 91.5 lbs 41.5 kg / 91.5 lbs 39.8 kg / 87.7 lbs 39.8 kg / 87.7 lbs 41.5 kg / 91.5 lbs 41.5 kg / 91.5 lbs 41.5 kg / 91.5 lbs 41.5 kg / 91.5 lbs 41.5 kg / 91.5 lbs 41.5 kg / 91.5 lbs 41.5 kg / 91.5 lbs
Engine Detail - - - - - - Reed intake Reed intake. Reed intake. Reed intake. Reed intake. Reed intake. Reed intake Reed intake - - -
Engine Type Single cylinder Single cylinder Single cylinder Single cylinder Single cylinder, two-stroke Single cylinder, two-stroke Single cylinder, two-stroke Single cylinder, two-stroke Single cylinder, two-stroke Single cylinder, two-stroke Single cylinder, two-stroke Single cylinder, two-stroke Single cylinder, two-stroke Single cylinder, two-stroke Single cylinder, two-stroke Single cylinder, two-stroke Single cylinder, two-stroke
Seat Height 650 mm / 25.6 in. 650 mm / 25.6 in. 660 mm / 26.0 in. 684 mm / 26.9 in. 684 mm / 26.9 in. 684 mm / 26.9 in. 684 mm / 26.9 in. 684 mm / 26.9 in. 684 mm / 26.9 in. 684 mm / 26.9 in. 684 mm / 26.9 in. 684 mm / 26.9 in. 684 mm / 26.9 in. 684 mm / 26.9 in. 684 mm / 26.9 in. 665 mm / 26.2 in. 665 mm / 26.2 in.
Fuel Capacity 1.80 litres / 0.48 gallons 1.80 litres / 0.48 gallons 1.80 litres / 0.48 gallons 2.30 litres / 0.61 gallons 2.30 litres / 0.61 gallons 2.30 litres / 0.61 gallons 2.30 litres / 0.61 gallons 2.30 litres / 0.61 gallons 2.30 litres / 0.61 gallons 2.30 litres / 0.61 gallons 2.30 litres / 0.61 gallons 2.30 litres / 0.61 gallons 2.30 litres / 0.61 gallons 2.30 litres / 0.61 US gallons 2.30 litres / 0.61 US gallons 2.30 litres / 0.61 US gallons 2.30 litres / 0.61 US gallons
Stroke 2 2 2 2 - - - - - - - - - - - - 2-stroke
Ground Clearance (mm) 255 mm 255 mm 255 mm 255 mm 252 mm 252 mm 252 mm 252 mm 252 mm 252 mm 252 mm 252 mm 252 mm 252 mm 252 mm 252 mm 252 mm

Key Specifications

Engine

Single cylinder, two-stroke

Power

N/A

Torque

N/A

Top Speed

N/A

Weight

41.5 kg / 91.5 lbs

Fuel Capacity

2.30 litres / 0.61 US gallons

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Full 2023 KTM 50 SX Specifications

Comments Intended for children 4-10 years old.
Colours White/orange/grey
Stroke 2-stroke
Engine Type Single cylinder, two-stroke
Displacement (ci) 2.99 cubic inches
Displacement (cc) 49.0 cc
Bore x Stroke (in,) 1.6 x 1.6 inches
Bore x Stroke (mm) 39.5 x 40.0 mm
Fuel System Carburettor
Ignition Seletra 2p D36 EMS
Starter Kick
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KTM 50 SX - other years

2023 2021 2018 2017 2014 2013
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