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2023 KTM 390 Adventure Overview
KTM 390 Adventure is an enduro / off-road motorcycle, displacing 373 cc. Power comes from a Four stroke, single cylinder, DOHC with finger followers, 4 valves engine, a compression ratio of 12.6:1. On the performance side, it delivers 44 hp @ 9000 rpm of peak power and 37 Nm of torque. On the road, the 2023 390 Adventure tips the scales at 172 kg, carries a 14.5-litre fuel tank, offers a seat height of 830 - 855 mm and spans a 1430 ± 15.5 mm wheelbase. The full 2023 KTM 390 Adventure spec sheet below covers every technical detail, from suspension travel to tyre sizes.
2023 KTM 390 Adventure compared with other bikes in the Enduro / Off-Road category
We checked the recorded figures for the 2023 KTM 390 Adventure against up to 1146 bikes in the Enduro / Off-Road category in our database, counting each model once at the model year nearest to this one.
- Only 299 of the other 815 bikes in the Enduro / Off-Road category have a lower torque than the 37 Nm of the 390 Adventure.
- With 855 mm, the 390 Adventure has the joint 438th lowest seat height of 1146 bikes in the Enduro / Off-Road category.
- Narrowing the field to the 254 models within five model years of it, the torque of 37 Nm is lower than that of 206 of the other 253.
Versus the 2022 model
Compared with the 2022 model, peak power increased from 32 kW to 32.8 kW (+0.8 kW). Peak torque, displacement and seat height are unchanged.
2023 390 Adventure - Pros & Cons
Strengths
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Strong power output: With 44 hp @ 9000 rpm and 37 Nm of torque on tap, the 390 Adventure is no slouch for its class.
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Strong front braking: Stopping power up front is strong thanks to the disc setup, with plenty of room to upgrade further with braided lines.
Considerations
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Tall seat height: At 830 - 855 mm, shorter riders will likely be on tiptoes at a standstill - worth sitting on one before you buy.
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Chain final drive upkeep: Budget time for routine chain maintenance - it's cheap to replace but needs consistent attention to avoid premature sprocket wear.
Wear Points & Servicing Notes
Cooling system servicing
390 Adventure's Liquid Cooled setup is low-maintenance provided the coolant interval is kept - old, acidic coolant is the main cause of long-term corrosion in the water passages.
Brake disc and pad wear
Braking up front comes from single 320 mm disc, 4 piston, radially mounted caliper - solid stopping power, with disc and pad wear best checked on the same schedule as tyre changes.
Suspension condition on used examples
The 390 Adventure's suspension runs 43 mm WP APEX inverted fork at the front. The rear uses WP APEX shock absorber, adjustbable rebound and spring preload. Fork-seal condition and rear linkage play are the two things worth checking before buying used.
Final drive maintenance
The 390 Adventure uses chain final drive, which is cheap to replace but needs regular cleaning, lubrication and tension checks to get a full service life out of the sprockets.
Frame & chassis check
Built around a Steel trellis frame, powder coated, Subframe Steel trellis frame, powder coated, the 390 Adventure's chassis is straightforward to inspect: look for corrosion, cracks or repair welds around stress points like the head-stock and swingarm mounts.
390 Adventure - Buying & Maintenance Guide
What to check before buying
Before handing over money for a used 2023 KTM 390 Adventure with its 373 cc enduro / off-road, cover the fundamentals: service book and oil change history, drivetrain wear, and any sign of oil weeping around the casings. This model runs chain final drive, so check chain slack and sprocket tooth profile specifically - a worn sprocket is a cheaper fix now than after it's chewed up the next chain. Now 3 years old, this enduro / off-road is as likely to show age-related wear (perished rubber, seized fasteners, degraded seals) as mileage-related wear. Cold-starting it yourself tells you a lot - a healthy 390 Adventure should catch quickly and settle into a smooth idle.
Oil and filter changes
Nothing protects the 390 Adventure's 373 cc four stroke, single cylinder, dohc with finger followers, 4 valves like disciplined oil changes - stay on the manufacturer's schedule (roughly every 6,000 km or annually). With a 12.6:1 compression ratio, running the octane grade specified in the manual matters more than on a lower-compression engine. Match the viscosity grade to what the owner's manual specifies, not what's cheapest.
Carburetor upkeep
Deposits in the carbs are the usual culprit behind poor running on a stored 390 Adventure - strip and clean the float bowls before the first start. Pilot jets clog first and get overlooked most, so make a point of checking them.
2023 KTM 390 Adventure - Frequently Asked Questions
What engine does the 2023 KTM 390 Adventure have?
The 2023 KTM 390 Adventure uses a Four stroke, single cylinder, DOHC with finger followers, 4 valves engine with 373 cc of displacement. It is liquid cooled.
How much does the 2023 KTM 390 Adventure weigh?
The 2023 KTM 390 Adventure weighs 172 kg. This is the manufacturer's wet figure.
How much power does the 2023 KTM 390 Adventure make?
The 2023 KTM 390 Adventure produces 44 hp @ 9000 rpm of power and 37 Nm of torque. These are peak figures.
What is the fuel tank capacity of the 2023 KTM 390 Adventure?
The 2023 KTM 390 Adventure has a 14.5-litre fuel tank. At around 5-6 litres per 100 km, that is roughly 241-290 km between stops.
Is the 2023 KTM 390 Adventure suitable for shorter riders?
The 2023 KTM 390 Adventure has a seat height of 830 - 855 mm. This is towards the tall end of the spectrum and will require most riders under 175 cm to tiptoe at stops.
What brakes does the 2023 KTM 390 Adventure have?
The 2023 KTM 390 Adventure uses single 320 mm disc, 4 piston, radially mounted caliper at the front and single 230 mm disc 2 piston caliper at the rear.
What tyre sizes does the 2023 KTM 390 Adventure use?
The 2023 KTM 390 Adventure runs 100/90 ZR 19 front and 130/80 ZR 17 rear tyres. A good selection of sport, touring and all-weather rubber is available in these sizes.
What gearbox does the 2023 KTM 390 Adventure have?
The 2023 KTM 390 Adventure is fitted with a 6 Speed transmission.
KTM 390 Adventure Spec Evolution
The KTM 390 Adventure was produced across 3 model years (2021-2023). The table below highlights the key specifications that changed across the production run - useful whether you are comparing years or tracking down a specific variant.
| Specification |
2021 |
2022 |
2023 |
| Max Power |
43.5 hp / 32 kW @ 9500 rpm |
43.5 hp / 32 kW @ 9500 rpm |
44 hp / 32.8 kW @ 9000 rpm |
| Engine Detail |
Four stroke, single cylinder. DOHC with finger followers, 4 valves |
Four stroke, single cylinder, DOHC with finger followers, 4 valves |
Four stroke, single cylinder, DOHC with finger followers, 4 valves |
| Seat Height |
855 mm / 33.6 in |
855 mm / 33.6 in |
830 - 855 mm / 32.6 in - 33.6 in |
| Fuel Capacity |
14 Litres / 3.8 US gal / 2.9 Imp gal |
14.5 Litres / 3.8 US gal |
14.5 Litres / 3.8 US gal |
| ABS |
Bosch 9.1MP Two Channel (disengageable) |
Bosch 9.1MP Two Channel-ABS (incl. Cornering-ABS and offroad mode) |
Bosch 9.1 MP (incl. Cornering-ABS and offroad mode, disengageable) |
| Clutch |
PASC slipper clutch, mechanically operated |
PASC antihopping clutch, mechanically operated |
PASC antihopping clutch, mechanically operated |
| Steering Head Angle |
63,5° |
63.5° |
63.5° |
| Max Torque |
3.6 kg-m / 35.3 Nm @7000rpm |
37 Nm / 27.2 lb-ft@ 7000rpm |
37 Nm / 27.2 lb-ft@ 7000rpm |
Key Specifications
Engine
Four stroke, single cylinder, DOHC with finger followers, 4 valves
Power
44 hp / 32.8 kW @ 9000 rpm
Torque
37 Nm / 27.2 lb-ft@ 7000rpm
Weight
172 kg / 379 lbs fully fueled
Fuel Capacity
14.5 Litres / 3.8 US gal
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Full 2023 KTM 390 Adventure Specifications
Year
2023
Make Model
KTM 390 Adventure
Seat Height
830 - 855 mm / 32.6 in - 33.6 in
Wheelbase
1430 ± 15.5 mm / 56.3 in ± 0.6 in
Ground Clearance
200 mm / 7.8 in
Fuel Capacity
14.5 Litres / 3.8 US gal
Wet Weight
172 kg / 379 lbs fully fueled
Displacement
373 cc / 22.7 cu-in
Engine Detail
Four stroke, single cylinder, DOHC with finger followers, 4 valves
Bore x Stroke
89 x 60 mm
Compression Ratio
12.6:1
Cooling System
Liquid Cooled
Emissions
Euro 5
Engine Management
Bosch EMS with RBW
Exhaust
Stainless steel primary and aluminium secondary silencer
Fuel Induction
Bosch EFI throttle body 38 mm
Lubrication
Wet sump
Starter
Electric
Clutch
PASC antihopping clutch, mechanically operated
Final Drive
Chain X-Ring 520
Final Drive Ratio
15:45
Primary Drive Ratios
30:80
Transmission / Drive
6 Speed
Frame Type
Steel trellis frame, powder coated, Subframe Steel trellis frame, powder coated
Suspension - Front
43 mm WP APEX inverted fork
Suspension - Rear
WP APEX shock absorber, adjustbable rebound and spring preload
Steering Head Angle
63.5°
Trail
98 mm / 3.8 in
Wheel Travel - Front
170 mm / 6.7 in
Wheel Travel - Rear
177 mm / 7.0 in
Brakes - Front
Single 320 mm disc, 4 piston, radially mounted caliper
Brakes - Rear
Single 230 mm disc 2 piston caliper
ABS
Bosch 9.1 MP (incl. Cornering-ABS and offroad mode, disengageable)
Rims - Front
2.50 x 19
Rims - Rear
3.50 x 17
Tyres - Front
100/90 ZR 19
Tyres - Rear
130/80 ZR 17
Wheels
Spoked wheels or cast wheels - black/orange or blue/orange
Specifications are compiled from manufacturer documentation and cross-referenced
technical sources, and corrected on an ongoing basis.
Spot an error? Let us know.
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