Adventure Motorcycles
2026KTM 390 Adventure X
36 fields on record
The 2026 KTM 390 Adventure X is an accessible entry-level adventure bike designed for novice riders seeking lightweight versatility. Powered by a 398.7cc single-cylinder engine delivering 45 PS, it excels at exploring unpaved roads and daily commuting with its capable WP suspension and steel trellis frame.
- Capacity
- 398.7 ccm
- Engine
- Single, four-stroke
- Gearbox
- 6-speed
- Wet weight
- 176.0 kg
- Seat height
- 825 mm
- Power
- 44.4 HP (33.1 kW) @ 8500 RPM
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Built primarily for mixed on-road and light off-road adventure riding, commuting, and weekend exploring.
- Built for
- A nimble, torquey single-cylinder trail-friendly ADV that favors agility and rider engagement over outright speed.
- Not ideal for
- Not ideal for riders seeking high-speed highway cruising, heavy long-distance two-up touring, or track-focused performance.
Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.
Will it fit you?
Worked out in your browser - nothing is sent to usRange and running costs
Worked out in your browser - nothing is sent to usBased on the published US (EPA-style) fuel economy estimate and tank size. Real-world figures depend on how and where you ride, and the last litres of a tank are reserve. Prices shown greyed are examples - type your own.
Engine
- Capacity
- 398.7 ccm
- Power
- 44.4 HP (33.1 kW) @ 8500 RPM
- CO2 Emissions
- 100 CO2 g/km
- EPA Certificate No.
- TKTXC.399ADR-004
- EPA Est. Fuel Consumption
- 4.25 L/100km (55.3 US mpg)
- EPA CO Emissions
- 0.4 CO g/km
- Torque
- 39.0 Nm (4.0 kgf-m) @ 7000 RPM
- Engine type
- Single, four-stroke
- Power/weight ratio
- 0.2523 HP/kg (wet)
- Bore x stroke
- 89.0 x 64.0 mm
- Cooling system
- Liquid
- Fuel system
- Injection
- Aspiration
- Naturally aspirated
- Valves per cylinder
- 4
Transmission
- Gearbox
- 6-speed
- Transmission type
- Manual
Dimensions & weight
- Wheelbase
- 1464 mm
- Seat height
- 825 mm
- Wet weight
- 176.0 kg
- Fuel capacity
- 14.00 litres
- Ground clearance
- 232 mm
- Dry weight
- Not on record - add it
Chassis & suspension
- Frame
- Steel trellis frame, powder coated
- Front suspension
- WP APEX open cartridge 43mm
- Rear suspension
- WP APEX Emulsion
- Front wheel travel
- 200 mm
- Rear wheel travel
- 200 mm
- Trail
- 99 mm
Brakes & wheels
- Front brakes
- Bybre axial floating calipers with 2 pistons
- Front brakes diameter
- 320 mm
- Rear brakes
- Bybre floating caliper 1 piston
- Rear brakes diameter
- 240 mm
- Front tyre
- 100/90-19
- Front Wheel
- 19.0 in
- Rear tyre
- 130/80-17
- Rear Wheel
- 17.0 in
Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.
What changed, year to year
Differences highlighted| Specification | 2025 | 2026 |
|---|---|---|
| Capacity | 399 cc | 399 cc |
| Seat height | 825 mm | 825 mm |
| Fuel capacity | 14 L | 14 L |
Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.
Rider Reviews
Common questions
What is the engine size of the KTM 390 Adventure X?
The 2026 KTM 390 Adventure X has a Capacity of 398.7 ccm (24.33 cubic inches).
What engine power does the KTM 390 Adventure X have?
The 2026 KTM 390 Adventure X has a Power of 44.4 HP (33.1 kW) @ 8500 RPM.
How many gears does the KTM 390 Adventure X have?
The 2026 KTM 390 Adventure X has a Gearbox of 6-speed.
What is the torque of the KTM 390 Adventure X?
The 2026 KTM 390 Adventure X has a Torque of 39.0 Nm (4.0 kgf-m or 28.8 ft.lbs) @ 7000 RPM.
How much does the KTM 390 Adventure X weigh?
The 2026 KTM 390 Adventure X has a Wet weight of 176.0 kg (388.0 pounds).
Shop this bike
Affiliate linksWe may earn a commission from qualifying eBay or Amazon purchases made through these links. As an Amazon Associate I earn from qualifying purchases.
Please log in or register if you'd like to leave a comment.
Own one? Add it to My Garage and write an owner review with an Owner badge.