KTM 125 SX 2018 User Manual

23 STANDARDS 107
JASO T903 MA
Different technical development directions required a separate specification for 4-stroke motorcycles – the JASO T903 MA standard.
Earlier, engine oils from the automobile industry were used for 4-stroke motorcycles because there was no separate motorcycle specifi-
cation.
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 the clutch are lubricated with the same oil.
The JASO MA 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 vis-
cosity. 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 2018 Specifications

General

Displacement	124.8 cm³
Bore x Stroke	54 mm x 54.5 mm
Starter	Kickstarter
Transmission	6-speed
Rear Suspension	WP shock absorber with linkage
Ground Clearance	375 mm
Seat Height	950 mm
Cooling	Liquid-cooled
Front Tire	80/100-21"
Rear Tire	100/90-19"
Engine Type	1-cylinder, 2-stroke
Front Suspension	WP USD, 48 mm
Front Brake	Disc brake
Rear Brake	Disc brake
Fuel Tank Capacity	7.5 liters
Fuel System	Carburetor
Wheelbase	1485 mm