2019 KTM 50 SX Mini Specifications

Name: 2019 KTM 50 SX Mini
Brand: KTM

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2019 KTM 50 SX Mini Overview

The 2019 KTM 50 SX Mini is a cross / motocross 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 2019 50 SX Mini tips the scales at 40 kg, carries a 2.10-litre fuel tank, offers a seat height of 684 mm and spans a 1032 mm wheelbase. Scroll down for the complete 2019 KTM 50 SX Mini spec sheet covering every technical detail from suspension travel to tyre sizes.

2019 50 SX Mini - Pros & Cons

Strengths

Accessible seat height: At 684 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 2019 KTM 50 SX Mini 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 Mini - Buying & Maintenance Guide

What to check before buying

When inspecting a used 2019 KTM 50 SX Mini, 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 Mini 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 Mini. 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 Mini 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.

2019 KTM 50 SX Mini - Frequently Asked Questions

What engine does the 2019 KTM 50 SX Mini have?

The 2019 KTM 50 SX Mini uses a Single cylinder, two-stroke engine with 49 cc of displacement.

How much does the 2019 KTM 50 SX Mini weigh?

The 2019 KTM 50 SX Mini weighs 40 kg. This is the manufacturer's dry figure.

What is the fuel tank capacity of the 2019 KTM 50 SX Mini?

The 2019 KTM 50 SX Mini has a 2.10-litre fuel tank.

Is the 2019 KTM 50 SX Mini suitable for shorter riders?

The 2019 KTM 50 SX Mini has a seat height of 684 mm. This is a comfortable, accessible height for most riders.

What brakes does the 2019 KTM 50 SX Mini have?

The 2019 KTM 50 SX Mini uses Single disc. Four-piston calipers. at the front and Single disc. Two-piston calipers. at the rear.

What fuel system does the 2019 KTM 50 SX Mini use?

The 2019 KTM 50 SX Mini uses Carburettor. Mikuni TMX, providing precise fuelling across the rev range and reliable cold-start behaviour.

What suspension does the 2019 KTM 50 SX Mini have?

The 2019 KTM 50 SX Mini uses WP upside-down Ø 35 mm up front and WP shock absorber at the rear.

KTM 50 SX Mini Spec Evolution

The KTM 50 SX Mini was produced across 9 model years (2012-2023). 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	2012	2013	2014	2017	2018	2019	2021	2022	2023
Dry Weight	40.5 kg / 89.3 lbs	40.5 kg / 89.3 lbs	39 kg / 86.0 lbs	40 kg / 88.2 lbs	40 kg / 88.2 lbs	40 kg / 88.2 lbs	40 kg / 88.2 lbs	40 kg / 88.2 lbs	40 kg / 88.2 lbs
Engine Detail	Reed intake	Reed intake	Reed intake	Reed intake.	Reed intake.	Reed intake	-	-	Reed-valve
Seat Height	558 mm / 22.0 in.	558 mm / 22.0 in.	558 mm / 22.0 in.	558 mm / 22.0 in.	558 mm / 22.0 in.	684 mm / 26.9 in.	558 mm / 22.0 in.	558 mm / 22.0 in.	558 mm / 22.0 in.
Fuel Capacity	2.00 litres / 0.53 gallons	2.00 litres / 0.53 gallons	2.00 litres / 0.53 gallons	2.30 litres / 0.61 gallons	2.30 litres / 0.61 gallons	2.10 litres / 0.55 US gallons	2.10 litres / 0.55 US gallons	2.10 litres / 0.55 US gallons	2.30 litres / 0.61 US gallons
Ground Clearance (mm)	184 mm	184 mm	184 mm	184 mm	184 mm	252 mm	184 mm	184 mm	184 mm
Ground Clearance (in.)	7.2 inches	7.2 inches	7.2 inches	7.2 inches	7.2 inches	9.9 inches	7.2 inches	7.2 inches	7.2 inches
Displacement (ci)	2.99 cubic inches	2.99 cubic inches	2.99 cubic inches	2.99 cubic inches	2.99 cubic inches	2.99 cubic inches	3.04 cubic inches	3.04 cubic inches	3.04 cubic inches
Displacement (cc)	49.00 cc	49.00 cc	49.00 cc	49.00 cc	49.00 cc	49.0 cc	49.8 cc	49.8 cc	49.8 cc

Key Specifications

Engine

Single cylinder, two-stroke

Power

N/A

Torque

N/A

Top Speed

N/A

Weight

40 kg / 88.2 lbs

Fuel Capacity

2.10 litres / 0.55 US gallons

Full 2019 KTM 50 SX Mini Specifications

Comments The engine power can be restricted to 5.5 hp with a kit.

Colours Orange/white/black

Bore x Stroke (in,) 1.6 x 1.6 inches

Bore x Stroke (mm) 39.5 x 40.0 mm

Displacement (cc) 49.0 cc

Displacement (ci) 2.99 cubic inches

Engine Type Single cylinder, two-stroke

Engine Detail Reed intake

Fuel System Carburettor. Mikuni TMX

Engine Lubrication Mixture oil lubrication

Ignition Seletra 2p D36

Starter Kick

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