Oil and filter change
≈ 15,000 km or 1 year
JASO MA or MA2 approved four-stroke motorcycle oil (JASO MB on scooters): an “energy conserving” car oil makes the wet clutch slip. Change it more often in city use or on track.
Source [1]790 Duke · 2018–2020
KTM 790 Duke 799 A2 · 48 hp (2018 to 2020)
The KTM 790 Duke 799 A2 uses the KTM LC8c 799 petrol engine with 48 hp.
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Technical specifications
- Fuel
- Petrol
- Power
- 48 PS / 35 kW
- Displacement
- 799 cm³
- Cylinders
- 2
- Engine code
- KTM LC8c 799
- Period covered
- 2018–2020
- Documented market
- Europe
Transmission
- Manual · 6 speeds
Figures apply to the cited configuration and market; equipment and transmissions may vary by production date.
Specification source : [1] AutoKarnet
This version
48 hp (35 kW), chain final drive, 6-speed manual. Built from 2018 to 2020.
AutoKarnet advice
In the range
It is the entry-level petrol version of this generation. The KTM LC8c 799 engine is also fitted to: KTM 790 Adventure (790 Adventure).
AutoKarnet advice
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.
AutoKarnet advice
Distinguishing similar versions
Among the 790 Duke pages, the 799 105 hp offers a comparison: 105 hp (77 kW), KTM LC8c 799, 799 cm³, 6-speed manual, 2018–2020. The version on this page has 48 hp (35 kW), KTM LC8c 799, 799 cm³, 6-speed manual, 2018–2020. When requesting a quote, specify the output and gearbox; the marketing name alone does not identify the correct parts.
AutoKarnet advice
Maintenance and records
≈: estimated reference — the vehicle’s service indicator prevails.
Brake fluid
Every 2 years
Replace the fluid in both circuits (and the hydraulic clutch if fitted), whatever the mileage; dark fluid has absorbed moisture.
Source [1]Fork oil
≈ 30,000 km
Fork oil change and seal check; an oil film on the tubes means a seal needs replacing before it contaminates the brake caliper.
Source [1]Chain kit (chain and sprockets)
≈ 25,000 km
Lubricate and check the tension every 500 to 1,000 km and after rain; replace chain and sprockets together when the chain no longer holds its tension or the teeth are hooked.
Source [1]Spark plugs
Every 30,000 km
Replace the full set; worn plugs raise consumption and cause misfires.
Source [1]Air filter
Every 30,000 km
Replace more often in dusty conditions.
Source [1]Valve clearance
Every 30,000 km
Check and adjust if needed, often together with the plugs; too little clearance burns the valves, too much makes the engine noisy.
Source [1]Coolant
Every 3 years
Replace the coolant and check the hoses and radiator; check the level cold between services.
Source [1]Questions about this version (3)
Which engine is in the KTM 790 Duke 799 A2?
The KTM LC8c 799 petrol engine (799 cc), 48 hp (35 kW).
AutoKarnet advice
Which oil for the KTM 790 Duke 799 A2?
A JASO MA2 10W-40 four-stroke motorcycle oil suited to the KTM LC8c 799 engine.
AutoKarnet advice
How do I check this page matches my car?
This page covers KTM 790 Duke 799 A2 48 hp, naked bike, 2018–2020, with 48 hp (35 kW), KTM LC8c 799, 799 cm³, 6-speed manual, 2018–2020. Compare these details with the registration document and gearbox identification. The designation KTM LC8c 799 may cover several revisions: a VIN is still needed to confirm part numbers.
AutoKarnet advice
Documentary sources
- [1] Rédaction AutoKarnet
AutoKarnet · FR · Europe · Synthèse éditoriale AutoKarnet · Accessed 09/10/2026