2018 KTM 125 XC-W Specifications

Name: 2018 KTM 125 XC-W
Brand: KTM

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2018 KTM 125 XC-W Overview

The 2018 KTM 125 XC-W is an enduro / off-road motorcycle built around 124.80 cc of displacement. Under the tank sits a Single cylinder, two-stroke engine. The bore and stroke measures 54 x 54.5 mm. From a practical standpoint, the 2018 125 XC-W tips the scales at 91 kg, carries a 9.50-litre fuel tank, offers a seat height of 960 mm and spans a 1,471 mm wheelbase. Scroll down for the complete 2018 KTM 125 XC-W spec sheet covering every technical detail from suspension travel to tyre sizes.

2018 125 XC-W - Pros & Cons

Strengths

Factory engineering: The 2018 KTM 125 XC-W represents KTM's engineering at the time, with a specification built around real-world usability.

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.
Tall seat height: The 960 mm seat height will challenge shorter riders - tiptoeing at low speeds is something to factor into your decision.

Owner Experiences & Common Issues

Carburetor maintenance

Carburetors on the 2018 KTM 125 XC-W 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.

125 XC-W - Buying & Maintenance Guide

What to check before buying

When inspecting a used 2018 KTM 125 XC-W, 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 125 XC-W 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 125 XC-W. 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 125 XC-W 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.

2018 KTM 125 XC-W - Frequently Asked Questions

What engine does the 2018 KTM 125 XC-W have?

The 2018 KTM 125 XC-W uses a Single cylinder, two-stroke engine with 124.80 cc of displacement.

How much does the 2018 KTM 125 XC-W weigh?

The 2018 KTM 125 XC-W weighs 91 kg. This is the manufacturer's dry figure.

What is the fuel tank capacity of the 2018 KTM 125 XC-W?

The 2018 KTM 125 XC-W has a 9.50-litre fuel tank.

Is the 2018 KTM 125 XC-W suitable for shorter riders?

The 2018 KTM 125 XC-W has a seat height of 960 mm. This is towards the tall end of the spectrum and will require most riders under 175 cm to tiptoe at stops.

What brakes does the 2018 KTM 125 XC-W have?

The 2018 KTM 125 XC-W uses Single disc. Brake calipers on floating bearings at the front and Single disc. Brake calipers on floating bearings at the rear.

What fuel system does the 2018 KTM 125 XC-W use?

The 2018 KTM 125 XC-W uses Carburettor. Mikuni TMX, providing precise fuelling across the rev range and reliable cold-start behaviour.

What suspension does the 2018 KTM 125 XC-W have?

The 2018 KTM 125 XC-W uses WP Xplor PDS shock absorber up front and WP shock absorber with linkage at the rear.

KTM 125 XC-W Spec Evolution

The KTM 125 XC-W was produced across 3 model years (2017-2019). 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	2017	2018	2019
Fuel Capacity	9.50 litres / 2.51 gallons	9.50 litres / 2.51 gallons	9.50 litres / 2.51 US gallons
Displacement (cc)	124.80 cc	124.80 cc	124.8 cc
Wheelbase	1,471 mm / 57.9 in.	1,471 mm / 57.9 in.	1471 mm / 57.9 in.
Fuel System	Carburettor. Mikuni	Carburettor. Mikuni TMX	Carburettor. Mikuni TMX
Final Drive	Chain	Chain	Chain (final drive)
Rake	26.5°	26.5°	26.5°