KTM 125 SX 2021 Setup Instructions

1 MEANS OF REPRESENTATION
2
1.1 Symbols used
The meaning of specific symbols is described below.
Indicates an expected reaction (e.g. of a work step or a function).
Indicates an unexpected reaction (e.g. of a work step or a function).
Indicates a page reference (more information is provided on the specified page).
Indicates information with more details or tips.
Indicates the result of a testing step.
Indicates a voltage measurement.
Indicates a current measurement.
Indicates a resistance measurement.
Indicates the end of an activity including potential rework.
1.2 Formats used
The typographical formats used in this document are explained below.
Proprietary name Indicates a proprietary name.
Name
®
Indicates a protected name.
Brand™ Indicates a brand available on the open market.
Underlined terms Refer to technical details of the vehicle or indicate technical terms, which
are explained in the glossary.

KTM 125 SX 2021 Specifications

General

Engine Type	1-cylinder, 2-stroke engine
Displacement	124.8 cm³
Bore x Stroke	54 mm x 54.5 mm
Starter	Kickstarter
Transmission	6-speed
Front Suspension	WP XACT-USD, Ø 48 mm
Rear Suspension	WP XACT Monoshock with linkage
Cooling	Liquid cooled
Front Tire	80/100-21"
Rear Tire	100/90-19"
Seat Height	950 mm
Ground Clearance	375 mm
Frame	Central tube frame made of chrome molybdenum steel
Front Brake	Disc brake
Rear Brake	Disc brake
Fuel Tank Capacity	7.5 liters
Fuel System	Mikuni TMX carburetor