KTM 250 SX

Maintenance specs for 1 variant of the KTM 250 SX — from 1998 to 2026.

1998–2026 KTM 250 SX

249cc Single-Cylinder 2-Stroke Liquid-Cooled MX (250 SX) · Chain

42 hp / lb-ft

Type5-Speed Manual (gearbox oil)

FluidMotorex Gear Oil 10W-30

Drain & fill0.74 qt

TypeMotorex Anti-Freeze (50/50 premix)

Capacity1.3 qt

TypeDOT 4

Tank1.9 gal

TypePremium 91 + 2-stroke oil premix

Front80/100-21

Rear100/90-19

Pressure (front)15 PSI

Pressure (rear)15 PSI

Trans service300 mi

Coolant flush1,500 mi

Spark plugs600 mi

Air filter150 mi

Drive belt600 mi