KTM
Your motorcycle

2024 KTM 390 Duke

399cc single · liquid-cooled · chain drive
Typical for 2024–2026 · confirm in your manual
All listed trims share these maintenance parts.

Your oil change shopping list

Everything for one DIY oil change
OilEngine oil10W-50 · Motorex Power Synt 4T (JASO MA2) · Capacity: see manualBuy on Amazon
1Oil filterMatch by year and modelBuy on Amazon
1Crush washerFor the drain plugBuy on Amazon

Parts & fluids for the 2024 390 Duke, by area of the bike

Each part shows when it's due and who should do it: DIY · EasyDIY · ModerateMechanicDealer or specialist

EngineOil, filters, plugs and valves6 items
Engine oil10W-50 · Motorex Power Synt 4T (JASO MA2)Capacity: see manual. Use motorcycle oil rated JASO MA or MA2. Car oils with friction modifiers can make a wet clutch slip.
WhenEvery 4,000 mi or once a year
DIY · EasyBuy on Amazon
Oil filterMatch by year and modelUse the store's fit check or your manual's part number.
WhenEvery oil change
DIY · EasyBuy on Amazon
Drain plug crush washerNew washer each changeCheap insurance against leaks. Torque the drain plug to spec; aluminum cases strip easily.
WhenEvery oil change
DIY · EasyBuy on Amazon
Air filterFits 2024 KTM 390 DukeUsually under the seat or tank. A clogged filter costs power and fuel economy.
WhenInspect every service; replace when dirty
DIY · ModerateBuy on Amazon
Spark plugs (1)Fits 2024 KTM 390 DukeUsually easy to reach. Use a plug socket and torque them to spec.
WhenPer your manual
DIY · ModerateBuy on Amazon
CoolantMotorex Coolant M3.0 (50/50)Use silicate-free motorcycle coolant. Check the level in the overflow tank before rides.
WhenEvery 2 years
DIY · ModerateBuy on Amazon
Final drive (chain)What turns the rear wheel3 items
Chain & sprocket kit520Always replace the chain and both sprockets together.
WhenReplace together when the chain is stretched or sprocket teeth are hooked (often 15,000–25,000 mi)
MechanicBuy on Amazon
Chain clean & lubeChain cleaner + O-ring safe chain lubeSpin the rear wheel on a stand, clean, then lube the inside of the chain while it's warm.
WhenEvery 300–600 mi, and after riding in rain
DIY · EasyBuy on Amazon
Chain slack adjustmentPer the sticker on your swingarmToo tight wears the transmission; too loose can throw the chain.
WhenCheck every 600 mi
DIY · Easy
BrakesPads and fluid3 items
Front brake padsFits 2024 KTM 390 DukeFront pads wear faster because they do most of the braking.
WhenInspect every 4,000 mi; replace at about 2 mm of pad
DIY · ModerateBuy on Amazon
Rear brake padsFits 2024 KTM 390 Duke
WhenInspect every 4,000 mi; replace at about 2 mm of pad
DIY · ModerateBuy on Amazon
Brake fluidDOT 4Never mix DOT 5 (silicone) with DOT 3/4. Check what your reservoir cap says.
WhenEvery 2 years
DIY · ModerateBuy on Amazon
Tires & wheelsYour only contact with the road3 items
Front tire110/70R17Check pressure before every ride; it's on the swingarm or frame sticker.
WhenAt 2/32" of tread, or 5–6 years old
MechanicBuy on Amazon
Rear tire150/60R17Rear tires usually wear out about twice as fast as fronts.
WhenAt 2/32" of tread, or 5–6 years old
MechanicBuy on Amazon
Tire pressure gaugeDigital or dial gaugeUnder-inflated tires make a bike handle badly and wear fast.
WhenBefore every ride
DIY · EasyBuy on Amazon
ElectricalBattery and bulbs2 items
BatteryFits 2024 KTM 390 DukeKeep it on a battery tender if the bike sits for more than a couple of weeks.
WhenMost last 3–5 years
DIY · EasyBuy on Amazon
Battery tenderSmart maintainerThe best way to make a motorcycle battery last.
WhenWhenever it's parked for winter
DIY · EasyBuy on Amazon
Suspension & controlsForks, clutch and cables3 items
Fork oil & sealsFork oil per your manualOil on the fork tubes means a leaking seal. Service both forks together.
WhenEvery 2 years or 15,000 mi; seals when they leak
MechanicBuy on Amazon
Clutch & throttle cablesCable lubeCheck the free play at the lever; a frayed cable should be replaced right away.
WhenLube and adjust every 4,000–6,000 mi
DIY · EasyBuy on Amazon
Steering head & swingarm bearingsInspect for playNotchy steering or a clunk when braking points to worn bearings.
WhenEvery 12,000 mi
Mechanic

Owner's manual for the 2024 KTM 390 Duke

Amazon fit lists aren't always perfect. Your owner's manual has the exact oil, capacities and part numbers for your bike, so check it before you buy.

Free official KTM owner's manual →From KTM's owner site. Pick your model and year.Printed owner's manual on Amazon →Original and reprint manuals for the 2024 KTM 390 Duke.Clymer & Haynes repair manuals →Step-by-step service manuals that home mechanics swear by.

Every 4,000 miles: what's due

Pick your mileage to see what comes due at that service.

4,000 miles 3 items
  • Engine oil & filterevery 4,000 mi
    Shop part →
  • Chain & sprocket inspectionevery 4,000 mi
  • Brake pads & tires inspectionevery 4,000 mi
8,000 miles 3 items
  • Engine oil & filterevery 4,000 mi
    Shop part →
  • Chain & sprocket inspectionevery 4,000 mi
  • Brake pads & tires inspectionevery 4,000 mi
12,000 miles 3 items
  • Engine oil & filterevery 4,000 mi
    Shop part →
  • Chain & sprocket inspectionevery 4,000 mi
  • Brake pads & tires inspectionevery 4,000 mi
16,000 miles 3 items
  • Engine oil & filterevery 4,000 mi
    Shop part →
  • Chain & sprocket inspectionevery 4,000 mi
  • Brake pads & tires inspectionevery 4,000 mi
20,000 miles 3 items
  • Engine oil & filterevery 4,000 mi
    Shop part →
  • Chain & sprocket inspectionevery 4,000 mi
  • Brake pads & tires inspectionevery 4,000 mi
24,000 miles 3 items
  • Engine oil & filterevery 4,000 mi
    Shop part →
  • Chain & sprocket inspectionevery 4,000 mi
  • Brake pads & tires inspectionevery 4,000 mi
28,000 miles 3 items
  • Engine oil & filterevery 4,000 mi
    Shop part →
  • Chain & sprocket inspectionevery 4,000 mi
  • Brake pads & tires inspectionevery 4,000 mi
32,000 miles 3 items
  • Engine oil & filterevery 4,000 mi
    Shop part →
  • Chain & sprocket inspectionevery 4,000 mi
  • Brake pads & tires inspectionevery 4,000 mi
36,000 miles 3 items
  • Engine oil & filterevery 4,000 mi
    Shop part →
  • Chain & sprocket inspectionevery 4,000 mi
  • Brake pads & tires inspectionevery 4,000 mi
40,000 miles 3 items
  • Engine oil & filterevery 4,000 mi
    Shop part →
  • Chain & sprocket inspectionevery 4,000 mi
  • Brake pads & tires inspectionevery 4,000 mi

Other years: 2023 390 Duke · 2025 390 Duke · All 390 Duke years

Motorcycle specs on PartSpec are typical values for this generation and haven't all been checked against the manufacturer yet. Confirm the oil, capacities and part numbers in your owner's manual before you buy. Read the full disclaimer

Affiliate disclosure: Some store links on this page are affiliate links. If you buy through them, PartSpec may earn a small commission at no extra cost to you. It never changes which parts we recommend. As an Amazon Associate, PartSpec earns from qualifying purchases. Learn more