KTM 450 SX-F User Manual

25 STANDARDS 104
JASO T903 MA
Different technical development directions required a new specification for 4-stroke motorcycles – the JASO T903 MA Standard. Ear-
lier, 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, high performance at high engine speeds are in the fore-
ground for motorcycle engines. In most motorcycles, the gearbox and the clutch are lubricated with the same oil as the engine. 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.

KTM 450 SX-F Specifications

General

Engine Type	Single Cylinder, 4-Stroke
Displacement	449.9 cc
Bore x Stroke	95 mm x 63.4 mm
Starter	Electric starter
Transmission	5-speed
Fuel System	Keihin EFI, throttle body 44 mm
Cooling	Liquid cooled
Front Suspension	WP XACT-USD, Ø 48 mm
Rear Suspension	WP XACT Monoshock with linkage
Ground Clearance	370 mm
Seat Height	950 mm
Compression Ratio	12.75:1
Ignition	Keihin EMS
Front Brake	Disc brake, 260 mm
Rear Brake	Disc brake, 220 mm
Final Drive	5/8 x 1/4"
Frame	Central-tube frame with double-cradle