2017 KTM 50 SX Specifications

Name: 2017 KTM 50 SX
Brand: KTM

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2017 KTM 50 SX Overview

The 2017 KTM 50 SX 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 2017 50 SX tips the scales at 41.5 kg, carries a 2.30-litre fuel tank, offers a seat height of 684 mm and spans a 1,032 mm wheelbase. Scroll down for the complete 2017 KTM 50 SX spec sheet covering every technical detail from suspension travel to tyre sizes.

2017 50 SX - 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 2017 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 2017 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.

2017 KTM 50 SX - Frequently Asked Questions

What engine does the 2017 KTM 50 SX have?

The 2017 KTM 50 SX uses a Single cylinder, two-stroke engine with 49 cc of displacement.

How much does the 2017 KTM 50 SX weigh?

The 2017 KTM 50 SX weighs 41.5 kg. This is the manufacturer's dry figure.

What is the fuel tank capacity of the 2017 KTM 50 SX?

The 2017 KTM 50 SX has a 2.30-litre fuel tank.

Is the 2017 KTM 50 SX suitable for shorter riders?

The 2017 KTM 50 SX has a seat height of 684 mm. This is a comfortable, accessible height for most riders.

What brakes does the 2017 KTM 50 SX have?

The 2017 KTM 50 SX uses Single disc. Four-piston calipers. at the front and Single disc. Two-piston calipers. at the rear.

What fuel system does the 2017 KTM 50 SX use?

The 2017 KTM 50 SX uses Carburettor. Mikuni TMX, providing precise fuelling across the rev range and reliable cold-start behaviour.

What suspension does the 2017 KTM 50 SX have?

The 2017 KTM 50 SX uses WP upside-down ? 35 mm up front and WP shock absorber 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 gallons

Full 2017 KTM 50 SX 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) 49.00 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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