How often does the KTM 790 Duke need an oil change?

Every 15,000 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 790 Duke?

Every 30,000 km. Budget around 3 hours of workshop labour plus spark plugs when it comes due.

Is the KTM 790 Duke cheap to maintain?

Yes, for its class. Scheduled servicing works out near €210 per 10,000 km on our model, below the naked average of €225.

What does the KTM 790 Duke cost to run per 10,000 km?

Roughly €1,560 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 790 Duke maintenance

Service schedule, intervals and realistic running costs for the 2025 790 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.

15,000 km
oil service: 30,000 km
valve check: 2 years
warranty: €1,560
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 790 Duke
Odometer	Work due
15,000 km	Engine oil and filter Chain wear and tension check
30,000 km	Engine oil and filter Chain wear and tension check Air filter Valve clearance check Spark plug Chain and sprocket kit (expect replacement)
45,000 km	Engine oil and filter Chain wear and tension check Fork oil service
60,000 km	Engine oil and filter Chain wear and tension check Air filter Valve clearance check Spark plug Chain and sprocket kit (expect replacement)

By calendar, not odometer

Time-based maintenance items for the KTM 790 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 790 Duke
Fuel4.5 L/100 km at 1.85 EUR/L	€835
Oil servicesevery 15,000 km, ~2.5 L oil plus filter and 1 h labour	€105
Valve checksevery 30,000 km, ~3 h labour plus plugs	€105
Chain and sprocketskit roughly every 24,000 km	€115
Tyresnaked rubber, ~8,000 km a set	€400
Total, estimated	€1,560

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 790 Duke owners actually watch

The LC8c twin's 15,000 km services make it one of the cheaper KTMs to run per km.
Early LC8c engines (2018 to 2020) had camshaft wear stories; the current CFMOTO-built engine has a clean record, but oil analysis at services buys peace of mind.
Chain guides wear faster than the chain itself; look at them when you adjust.

Frequently asked

How often does the KTM 790 Duke need an oil change?: Every 15,000 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 790 Duke?: Every 30,000 km. Budget around 3 hours of workshop labour plus spark plugs when it comes due.
Is the KTM 790 Duke cheap to maintain?: Yes, for its class. Scheduled servicing works out near €210 per 10,000 km on our model, below the naked average of €225.
What does the KTM 790 Duke cost to run per 10,000 km?: Roughly €1,560 including fuel, scheduled servicing, chain and tyres, using the assumptions published on this page. Ride harder or softer and the tyre line moves first.

790 Duke specs and score Parts and consumables All naked bikes