KTM 125 SX 2019 User Manual

STANDARDS 23
133
JASO T903 MA2
Different technical development directions required a separate specification for motorcycles – the JASO T903 MA2
standard.
Earlier, engine oils from the automobile industry were used for motorcycles because there was no separate motor-
cycle specification.
Whereas long service intervals are demanded for automobile engines, the focus for motorcycle engines is on high
performance at high engine speeds.
In most motorcycle engines, the transmission and clutch are lubricated with the same oil.
The JASO T903 MA2 standard meets these special requirements.
SAE
The SAE viscosity classes were defined by the Society of Automotive Engineers and are used for classifying oils
according to their viscosity. The viscosity describes only one property of oil and says nothing about quality.
JASO FD
JASO FD is a classification for a 2-stroke engine oil that was specifically developed for the extreme demands of
racing. Thanks to first rate synthetic esters and specially designed additives, superb combustion is achieved even
under extreme operating conditions.

KTM 125 SX 2019 Specifications

General

Displacement	124.8 cm³
Starter	Kickstarter
Transmission	6-speed
Fuel System	Mikuni TMX 38
Front Brake	Disc brake
Rear Brake	Disc brake
Ground Clearance	375 mm
Seat Height	950 mm
EMS	Kokusan
Engine Type	1-cylinder, 2-stroke
Bore x Stroke	54 mm x 54.5 mm
Rear Suspension	WP shock absorber with linkage
Fuel Tank Capacity	7.5 l
Clutch	Wet, multi-disc clutch, Brembo hydraulics
Frame Design	Central tube frame made of chrome molybdenum steel