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KTM 890 Duke (2021+) Maintenance Schedule and Service Intervals

2021 KTM 890 Duke base model

This is the maintenance schedule and service intervals for the KTM 890 Duke (non-R), sometimes called the Duke 890, announced in early 2021 for the same model year.

The KTM 890 Duke is part of the 890 series of motorcycles. It shares a platform with the 890 Duke R, though the base model 890 Duke came slightly afterwards.

The KTM 890 Duke is based on the same 889cc DOHC liquid-cooled parallel twin as in the 890 Duke R, but has slightly lower power output, as well as lower-spec suspension, brakes, and tyres. Plus, it has a more relaxed rider position. It’s also cheaper.

All in all, the 890 Duke is a friendly and yet fiery alternative to the KTM 890 Duke R.

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What you need to service your KTM 890 Duke

Apart from basic motorcycle maintenance tools, here are a few spares, fluids, and consumables that will help you service your KTM Duke motorcycle.

KTM recommends using Motorex items. Motorex is a Swiss brand.

PartKTM 890 Duke spec
Engine oilThe manual specifies Motorex Power Synthetic 4T 10W/50, or another SAE 10W/50 fully synthetic engine oil that meets JASO T903 MA2 spec.
Oil filterUse part number 61338015200 or K&N part KN-650, a popular equivalent. (This oil filter is used in most KTM adventure bikes.)
Fork oilThe manual recommends SAE 5 fork oil, preferably Motorex 5W Racing Fork Oil.
Brake fluidThe manual requires DOT 4 or DOT 5.1, recommending Castrol DOT 4 or Motorex DOT 5.1 brake fluid.
Air filterPart number for the air filter is 64106015000 and it’s highly effective (and not often changed).
CoolantKTM recommends Motorex Coolant M3.0 or other “high-grade, silicate-free coolant with corrosion inhibitors”.
Spark plugUse an NGK LMAR9AI-10 to change spark plugs.
Chain maintenanceMaintain the chain with a Motorex chain cleaner and Motorex chain lube.
KTM 890 Duke service items

Maintenance Schedule for the KTM 890 Duke

Below is the maintenance schedule for the KTM 890 Duke, adapted from the manual.

Notes:

  • Maintenance schedule intervals for the KTM 890 Duke are 15000 km (9300 mi), with a major service (valve service & new plugs) every two intervals.
  • After the end of the service schedule, keep repeating it in this pattern.
  • The maintenance schedule in the manual is broken up into two sections — required maintenance and recommended maintenance (but you should do both).

Required maintenance

miles x 10000.62918.6
km x 100011530Every
[Dealer] Read out the fault memory using the KTM diagnostics tool.Year
[Dealer] Program the shift shaft sensor.Year
Check that the electrical system is functioning properly.Year
Change the engine oil and the oil filter, clean the oil screens.Year
Check the front brake linings.Year
Check the rear brake linings.Year
Check the brake discs.Year
Check the brake lines for damage and leakageYear
Check the front brake fluid level.Year
Check the rear brake fluid level.Year
Change the front brake fluid. (Castrol DOT 4)2 years
Change the rear brake fluid. (Castrol DOT 4)2 years
Check the free travel of the clutch leverYear
Check the free travel of the foot brake leverYear
Check the shock absorber and fork for leaks. Perform service as needed and depending on how the vehicle is used.Year
Clean the dust boots of the fork legs
Check the steering head bearing for play.Year
Check the tire conditionYear
Check tire pressureYear
Check the chain, rear sprocket, engine sprocket, and chain guide. (Manage with Motul chain care kit)Year
Check the chain tensionYear
Change the spark plugs. (NGK LMAR9AI-10)
Check the valve clearance.
Check the antifreeze and coolant level.Year
Check the cables for damage and routing without kinksYear
Change the air filter, clean the air filter box.
Check the fuel pressure and the absorbing elements of the fuel tank bracket.Year
Check the headlight setting.
Check that the radiator fan is functioning properly.Year
Final check: Check the vehicle is roadworthy and take a test ride.Year
[Dealer] Read out the error memory after the test ride using the KTM diagnostics tool.Year
[Dealer] Set the service interval display.Year
[Dealer] Make a service entry in KTMDealer.netYear
KTM 890 Duke Maintenance Schedule

Recommended maintenance

miles x 10000.629.318.6
km x 100011530Every
Check the frame
Check the link fork
Check/clean the oil nozzle for clutch lubrication
Check the swingarm bearing for play
Check the wheel bearing for play
Empty the drainage hosesYear
Check all hoses (fuel, coolant, bleeder, drainage etc.) and sleeves for cracking, leaks, and incorrect routingYear
Grease all moving parts (e.g. side stand, hand lever, chain) and check for smooth operationYear
Check the tightness of the safety-relevant screws and nuts which are easily accessible.Year
Change the coolant4 years
KTM 890 Duke recommended maintenance

Wheels and Tyres for the KTM 890 Duke

Below are tyre sizes and recommended pressures for the KTM 890 Duke. It ships with Continental ContiRoad tyres stock.

These are specifications recommended for specific tyres and assumed weights; adjust them based on your own weight, riding conditions, and so on.

WheelTyre sizeTyre pressure (cold)
Front120/70 ZR 17 M/C (58W) TL (J)33 psi (2.3 bar)
Back180/55 ZR 17 M/C (73W) TL (G)Solo: 36 psi (2.5 bar)
With passenger/luggage: 38 psi (2.6 bar)
KTM 890 Duke recommended tyre sizes and pressures

About the KTM 890 Duke

2021 KTM 890 Duke base model action track 1

Say KTM 890 Duke and people expect to hear an “R” on the end, but the 890 Duke is just that — the base model of the 890 Duke R, with no R.

The KTM 890 Duke replaces the KTM 790 Duke, which was already a game-changer for KTM (two pistons in a Duke, rather than just one!). But the 890 takes it a step further.

The 890 Duke continues the same spirit of the “middleweight” duke motorcycles: an alternative the blistering Super Duke R, in a lighter but still very exciting package. The Duke range are not upright tourers, but nor are they committed sportbikes — like the Speed Triple and Street Triple from Triumph, they’re sportbikes with handlebars.

The 890 Duke is a slightly down-spec, more affable, and cheaper version of the 890 Duke R. But those considering the savings needn’t worry too much — despite the lower spec, the base model Duke is still a very capable machine.

Here’s what’s changed with the 890 Duke (base model) compared to the R:

  • Peak power: The non-R makes 86 kW (115 hp) @ 10500 rpm, vs the 89 kW (119 hp) @ 9250 rpm
  • Peak torque: 92 Nm (68 lb-ft) @ 8000 rpm, vs 99 Nm (79 lb-ft) @ 7750 rpm
  • Suspension: WP Apex suspension front and rear, with only preload adjustability in the rear. The 890 Duke R has WP Apex Pro suspension that’s fully adjustable.
  • KTM engineered front brakes (vs. Brembo Stylema on the R) on 300mm calipers (20mm smaller) and rear brake
  • Continental ContiRoad tyres, vs. Michelin Power Cup 2 tyres on the R
  • Lower ground clearance/lean angle and seat height
  • Slightly more relaxed rider triangle

From the other perspective, the higher-spec 890 Duke R seems like a bargain for only US$1000 extra considering the higher grade of components.

Manual for the KTM 890 Duke (base model)

The above maintenance schedule comes from the user’s manual for the KTM 890 Duke.

The 890 Duke’s manual is for some reason in portrait (vertical) format, different to most other KTM manuals…

You can get the user manual directly from KTM’s website.

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