The Moto Ref

KTM 390 SMC R maintenance

Service schedule, intervals and realistic running costs for the 2025 390 SMC R, built from its published service data and the cost assumptions shown further down. A compiled guide like this supplements the owner's manual; it never replaces it.

10,000 km
oil service
20,000 km
valve check
2 years
warranty
€1,570
est. per 10,000 km

What is due next on yours?

Distance-based schedule

One row per oil-service milestone. Bold rows are the bigger visits.

Distance-based maintenance schedule for the KTM 390 SMC R
OdometerWork due
10,000 km
  • Engine oil and filter
  • Chain wear and tension check
20,000 km
  • Engine oil and filter
  • Chain wear and tension check
  • Air filter
  • Valve clearance check
  • Spark plug
30,000 km
  • Engine oil and filter
  • Chain wear and tension check
  • Chain and sprocket kit (expect replacement)
40,000 km
  • Engine oil and filter
  • Chain wear and tension check
  • Air filter
  • Valve clearance check
  • Spark plug
  • Fork oil service

By calendar, not odometer

Time-based maintenance items for the KTM 390 SMC R
Engine oil and filterevery 12 months if the distance interval is not reached
Brake fluidevery 2 years
Coolantevery 3 years
Fork oilevery 40,000 km
Batteryload test yearly; typical life 4 to 5 years
Advertisement320 x 100

What it costs per 10,000 km

Estimated running costs per 10,000 km for the KTM 390 SMC R
Fuel3.6 L/100 km at 1.85 EUR/L€665
Oil servicesevery 10,000 km, ~2 L oil plus filter and 1 h labour€145
Valve checksevery 20,000 km, ~2 h labour plus plugs€110
Chain and sprocketskit roughly every 24,000 km€115
Tyressupermoto rubber, ~6,000 km a set€535
Total, estimated€1,570

Assumptions: workshop labour €95/hour, fuel 1.85 EUR/L, oil €18/L, chain kit €180 fitted, supermoto tyres €320 a set lasting about 6,000 km. DIY servicing removes the labour lines entirely. Your prices will differ; the ratios mostly will not.

What 390 SMC R owners actually watch

  • The 1,000 km first service matters more than any later one on the LC4c single: it is where the break-in metal leaves the oil. Do not stretch it.
  • Supermoto duty is hard on chains. Check tension every few hundred km if you ride it the way it was designed.
  • The WP APEX fork responds well to fresh oil well before the book says so if you ride kerbs and track days.

Frequently asked

How often does the KTM 390 SMC R need an oil change?
Every 10,000 km or 12 months, whichever comes first. Expect roughly €155 at a dealer, or the price of oil and a filter if you do it yourself.
What is the valve check interval on the KTM 390 SMC R?
Every 20,000 km. Budget around 2 hours of workshop labour plus spark plugs when it comes due.
Is the KTM 390 SMC R cheap to maintain?
Yes, for its class. Scheduled servicing works out near €255 per 10,000 km on our model, below the supermoto average of €265.
What does the KTM 390 SMC R cost to run per 10,000 km?
Roughly €1,570 including fuel, scheduled servicing, chain and tyres, using the assumptions published on this page. Ride harder or softer and the tyre line moves first.