KTM 50 SX

Maintenance specs for 1 variant of the KTM 50 SX — from 1998 to 2026.

1998–2026 KTM 50 SX

49.9cc Single-Cylinder 2-Stroke Liquid-Cooled MX (50 SX) · Chain

7 hp / lb-ft

TypeAutomatic (gearbox oil)

FluidMotorex ATF Dexron II

Drain & fill0.16 qt

TypeMotorex Anti-Freeze (50/50 premix)

Capacity0.4 qt

TypeDOT 4

Tank0.6 gal

TypePremium 95 RON + 2-stroke oil premix

Front60/100-14

Rear80/100-10

Pressure (front)10 PSI

Pressure (rear)10 PSI

Trans service150 mi

Coolant flush900 mi

Spark plugs300 mi

Air filter75 mi

Drive belt300 mi