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2023 KTM 390 Adventure SW Overview
The 2023 KTM 390 Adventure SW is an enduro / off-road motorcycle built around 373.2 cc of displacement. Under the tank sits a Single cylinder, four-stroke engine running Double Overhead Cams/Twin Cam (DOHC) valve actuation. The bore and stroke measures 89 x 60 mm. 2023 KTM 390 Adventure SW delivers 37 Nm of torque. From a practical standpoint, the 2023 390 Adventure SW tips the scales at 161 kg, carries a 14.50-litre fuel tank, offers a seat height of 830 mm and spans a 1430 mm wheelbase. That's roughly 37.8 kg lighter than the average enduro / off-road motorcycle in our database. Scroll down for the complete 2023 KTM 390 Adventure SW spec sheet covering every technical detail from suspension travel to tyre sizes.
2023 390 Adventure SW - Pros & Cons
Strengths
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Fuel injection: The fuel injection system delivers crisp throttle response and reliable cold starts regardless of altitude or temperature.
Considerations
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Tall seat height: The 830 mm seat height will challenge shorter riders - tiptoeing at low speeds is something to factor into your decision.
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Chain final drive upkeep: Chain final drive needs regular cleaning, lubrication and tension checks to get full life out of the sprockets.
Wear Points & Servicing Notes
Fuelling & injector care
Fuelling comes from fuel injection. Systems like this are largely maintenance-free beyond keeping fuel quality decent and injectors clear - a fuel-system cleaner every service interval is cheap insurance.
Valve clearance checks
Double Overhead Cams/Twin Cam (DOHC) valve actuation on the 390 Adventure SW means clearances should be checked at the manufacturer's specified interval - they can tighten as mileage accumulates, and a light top-end tick is usually the first sign.
Brake disc and pad wear
The Single disc. ABS. Four-piston radial fixed calliper. front brake gives strong, progressive stopping power. Disc thickness and pad depth are worth checking at every tyre change, since worn pads can score the disc surface.
Suspension condition on used examples
Up front, the 390 Adventure SW runs WP APEX upside-down Ø 43 mm and WP APEX monoshock at the rear. On a used example, check fork seals for weeping oil and test the rear linkage for play - seals are a relatively cheap fix but useful when negotiating price.
Final drive maintenance
Final drive is by chain - expect to clean and lube it every few hundred kilometres and check tension regularly; a neglected chain wears the sprockets faster than the chain itself.
Frame & chassis check
The frame is Steel trellis frame, powder coated - worth a visual check for corrosion or impact damage around the head-stock and swingarm pivot on any used example, since frame damage is far costlier to fix than any service item.
390 Adventure SW - Buying & Maintenance Guide
What to check before buying
When inspecting a used 2023 KTM 390 Adventure SW, start with the basics: check the service book for oil change frequency, inspect the chain and sprockets for wear, and look for oil seepage around the engine casings and rocker covers. A cold start test is invaluable - a well-maintained 390 Adventure SW should fire up cleanly and settle to a smooth idle within a few seconds.
Oil and filter changes
Regular oil changes are the single most important maintenance task on any 390 Adventure SW. Stick to the manufacturer's interval - typically every 6,000 km or once a year, whichever comes first. Always use the correct viscosity grade as specified in the owner's manual.
Fuel system care
The 390 Adventure SW's fuel injection system is durable but benefits from quality fuel and the occasional use of a fuel-system cleaner additive. If the bike has been stored for more than three months, drain and replace the fuel to prevent varnish deposits in the injectors.
Valve clearance service
Check that valve clearances have been adjusted at the correct intervals on any used 390 Adventure SW. A bike with clearances out of spec doesn't always feel obviously wrong - but tight clearances accelerate valve seat wear. Ask for service documentation proving it's been done.
2023 KTM 390 Adventure SW - Frequently Asked Questions
What engine does the 2023 KTM 390 Adventure SW have?
The 2023 KTM 390 Adventure SW uses a Single cylinder, four-stroke engine with 373.2 cc of displacement.
How much does the 2023 KTM 390 Adventure SW weigh?
The 2023 KTM 390 Adventure SW weighs 161 kg. This is the manufacturer's dry figure.
How much power does the 2023 KTM 390 Adventure SW make?
The 2023 KTM 390 Adventure SW produces 37 Nm of torque.
What is the fuel tank capacity of the 2023 KTM 390 Adventure SW?
The 2023 KTM 390 Adventure SW has a 14.50-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 SW suitable for shorter riders?
The 2023 KTM 390 Adventure SW has a seat height of 830 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 SW have?
The 2023 KTM 390 Adventure SW uses Single disc. ABS. Four-piston radial fixed calliper. at the front and Single disc. ABS. Single-piston floating calliper. at the rear.
What tyre sizes does the 2023 KTM 390 Adventure SW use?
The front tyre size on the 2023 KTM 390 Adventure SW is 110/90-17.
Key Specifications
Engine
Single cylinder, four-stroke
Power
Not published by manufacturer
Torque
37.0 Nm (3.8 kgf-m or 27.3 ft.lbs)
Top Speed
Not published by manufacturer
Weight
161 kg / 354.9 lbs
Fuel Capacity
14.50 litres / 3.83 US gallons
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Full 2023 KTM 390 Adventure SW Specifications
Comments
Small windshield
Colours
Orange/black
Ground Clearance (in.)
7.9 inches
Ground Clearance (mm)
200 mm
Seat Heigth -Alternate (in.)
33.7 inches
Seat Heigth -Alternate (mm)
855 mm
Seat Height
830 mm / 32.7 in.
Wheelbase
1430 mm / 56.3 in.
Dry Weight
161 kg / 354.9 lbs
Fuel Capacity
14.50 litres / 3.83 US gallons
Fuel Control
Double Overhead Cams/Twin Cam (DOHC)
Engine Type
Single cylinder, four-stroke
Displacement (ci)
22.77 cubic inches
Displacement (cc)
373.2 cc
Bore x Stroke (in,)
3.5 x 2.4 inches
Bore x Stroke (mm)
89.0 x 60.0 mm
CO2
78.2 CO2 g/km. (CO2 - Carbon dioxide emission)
Fuel System
Injection
Engine Lubrication
Wet sump
Fuel Consumption
3.37 litres/100 km (29.7 km/l or 69.80 mpg)
Ignition
Bosch EMS with RBW
Starter
Electric
Valve System
4
Clutch
PASC™ antihopping clutch, mechanically operated
Final Drive
Chain (final drive)
Gearbox
6-speed
Primary Drive
520 X-Ring chain.
Frame Type
Steel trellis frame, powder coated
Suspension - Front
WP APEX upside-down Ø 43 mm
Suspension - Rear
WP APEX monoshock
Rake
26.5°
Wheel Travel - Front
170 mm / 6.7 in.
Wheel Travel - Rear
177 mm / 7.0 in.
Instrumentation
TFT Instrumentation
Lighting system
LED headlight
Brakes - Front
Single disc. ABS. Four-piston radial fixed calliper.
Brakes - Rear
Single disc. ABS. Single-piston floating calliper.
Rims
Wire spoked
Tyres - Front
110/90-17
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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