AutoKarnet
KTM 390 Duke (2017) (2017–2023)
KTM 390 Duke (2017): naked bike, 2017–2023. This page covers 1 powertrains from 44 to 44 hp: Petrol. Each version’s dates help distinguish changes within this generation.
Choose an engine
Engines
373: KTM LC4c 373, 44 hp (32 kW), 2017 to 2023
Maintenance
Typical interval: oil change every 7,500 km or 12 months, whichever comes first. Brake fluid every 2 years. On chain-driven models, lubricate and adjust the chain every 500 to 1,000 km. Plugs, valve clearance and air filter depend on the engine: see each version.
Body style and inspection points
On a motorcycle, tyres, final drive and brakes matter as much as the oil change. Check the tyre manufacturing date, steering-head play and fork-tube seals; an oil film on a tube means a fork seal needs replacing. A notched steering bearing can be felt when braking at low speed.
Comparing generations
Other documented generations of this model: • 390 Duke (2013) (2013–2016) : naked bike, 44–44 hp. • 390 Duke (2024) (from 2024) : naked bike, 45–45 hp. A first registration near a generation change does not identify the car on its own: check the body style and powertrain before using a service schedule.
Maintenance: choosing the correct powertrain
The guidance below applies to the versions named in each group. Individual pages identify the engine and gearbox; this editorial guidance is not a manufacturer schedule matched to a VIN. Petrol — 373 44 hp (2017–2023) • Oil and filter change : ≈ 7,500 km or 1 year • Brake fluid : Every 2 years • Fork oil : ≈ 30,000 km • Chain kit (chain and sprockets) : ≈ 25,000 km • Spark plugs : Every 15,000 km • Air filter : Every 15,000 km • Valve clearance : Every 15,000 km • Coolant : Every 3 years