How often does the KTM 390 Duke 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 Duke?

Every 20,000 km. Budget around 2 hours of workshop labour plus spark plugs when it comes due.

Is the KTM 390 Duke cheap to maintain?

It is pricier than average for its class: scheduled servicing works out near €255 per 10,000 km on our model, against a naked average of €225. The full cost table above shows where it goes.

What does the KTM 390 Duke cost to run per 10,000 km?

Roughly €1,420 including fuel, scheduled servicing, chain and tyres, using the assumptions published on this page. Ride harder or softer and the tyre line moves first.

KTM 390 Duke maintenance

Service schedule, intervals and realistic running costs for the 2025 390 Duke, 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: €1,420
est. per 10,000 km

What is due next on yours?

Odometer reading (km)

Distance-based schedule

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

Distance-based maintenance schedule for the KTM 390 Duke
Odometer	Work 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 Duke
Engine oil and filter	every 12 months if the distance interval is not reached
Brake fluid	every 2 years
Coolant	every 3 years
Fork oil	every 40,000 km
Battery	load test yearly; typical life 4 to 5 years

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What it costs per 10,000 km

Estimated running costs per 10,000 km for the KTM 390 Duke
Fuel3.5 L/100 km at 1.85 EUR/L	€650
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
Tyresnaked rubber, ~8,000 km a set	€400
Total, estimated	€1,420

Assumptions: workshop labour €95/hour, fuel 1.85 EUR/L, oil €18/L, chain kit €180 fitted, naked tyres €320 a set lasting about 8,000 km. DIY servicing removes the labour lines entirely. Your prices will differ; the ratios mostly will not.

What 390 Duke owners actually watch

Same LC4c single as the SMC R: religious first service at 1,000 km, then it is a famously undemanding engine.
Commuters kill chains with neglect, not distance. A monthly clean and lube doubles kit life.
Check the preload on the rear APEX shock if you carry a pillion; the stock setting is solo-rider soft.

Frequently asked

How often does the KTM 390 Duke 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 Duke?: Every 20,000 km. Budget around 2 hours of workshop labour plus spark plugs when it comes due.
Is the KTM 390 Duke cheap to maintain?: It is pricier than average for its class: scheduled servicing works out near €255 per 10,000 km on our model, against a naked average of €225. The full cost table above shows where it goes.
What does the KTM 390 Duke cost to run per 10,000 km?: Roughly €1,420 including fuel, scheduled servicing, chain and tyres, using the assumptions published on this page. Ride harder or softer and the tyre line moves first.

390 Duke specs and score Parts and consumables All naked bikes