2023 KTM 450 EXC-F Six Days Specifications

Name: 2023 KTM 450 EXC-F Six Days
Brand: KTM

Enduro / Off-Road • Specs last verified 13 July 2026

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2023 KTM 450 EXC-F Six Days Overview

The 2023 KTM 450 EXC-F Six Days is an enduro / off-road motorcycle built around 449.9 cc of displacement. Under the tank sits a Single cylinder, four-stroke engine running Single Overhead Cams (SOHC) valve actuation. The bore and stroke measures 95 x 63.4 mm. From a practical standpoint, the 2023 450 EXC-F Six Days tips the scales at 106 kg, carries a 9.20-litre fuel tank and offers a seat height of 960 mm. Scroll down for the complete 2023 KTM 450 EXC-F Six Days spec sheet covering every technical detail from suspension travel to tyre sizes.

2023 KTM 450 EXC-F Six Days compared with other bikes in the Enduro / Off-Road category

Here is how the 2023 KTM 450 EXC-F Six Days stacks up against other bikes in the Enduro / Off-Road category in our database. Each model counts once, using the model year closest to this one, and the comparison covers up to 1434 models.

Seat height of 960 mm is taller than that of 993 of the other 1145 bikes in the Enduro / Off-Road category.
Only 629 of the other 1433 bikes in the Enduro / Off-Road category have a larger engine displacement than the 450 cc of the 450 EXC-F Six Days.
Narrowing the field to the 408 models within five model years of it, the seat height of 960 mm is taller than that of 360 of the other 407.

Versus the 2022 model

The figures we track are unchanged from the 2022 model: displacement and seat height all match.

2023 450 EXC-F Six Days - Pros & Cons

Strengths

Fuel injection: The fuel injection system delivers crisp throttle response and reliable cold starts regardless of altitude or temperature.
Strong front braking: The double disc front brake gives excellent stopping power and responds well to aftermarket braided lines.

Considerations

Tall seat height: The 960 mm seat height will challenge shorter riders - tiptoeing at low speeds is something to factor into your decision.
Modest fuel capacity: The 9.20-litre tank means more frequent fuel stops on longer rides, which is worth planning around on touring routes.
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

Single Overhead Cams (SOHC) valve actuation on the 450 EXC-F Six Days 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 double disc 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 450 EXC-F Six Days runs WP XPLOR-USD, Ø 48 mm and WP Xplor PDS schock absorber 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 25CrMo4 steel central-tube - 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.

Low-speed handling

At just 106 kg, the 450 EXC-F Six Days is light enough to manhandle easily at a standstill - one of the practical advantages of its class.

450 EXC-F Six Days - Buying & Maintenance Guide

What to check before buying

When inspecting a used 2023 KTM 450 EXC-F Six Days with its 449.9 cc enduro / off-road, start with the basics: check the service book for oil change frequency, inspect the drivetrain for wear, and look for oil seepage around the engine casings and rocker covers. 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. A cold start test is invaluable - a well-maintained 450 EXC-F Six Days 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 for the 450 EXC-F Six Days's 449.9 cc single cylinder, four-stroke. 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 450 EXC-F Six Days'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 450 EXC-F Six Days. 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 450 EXC-F Six Days - Frequently Asked Questions

What engine does the 2023 KTM 450 EXC-F Six Days have?

The 2023 KTM 450 EXC-F Six Days uses a Single cylinder, four-stroke engine with 449.9 cc of displacement.

How much does the 2023 KTM 450 EXC-F Six Days weigh?

The 2023 KTM 450 EXC-F Six Days weighs 106 kg. This is the manufacturer's dry figure.

What is the fuel tank capacity of the 2023 KTM 450 EXC-F Six Days?

The 2023 KTM 450 EXC-F Six Days has a 9.20-litre fuel tank. At around 5-6 litres per 100 km, that is roughly 153-183 km between stops.

Is the 2023 KTM 450 EXC-F Six Days suitable for shorter riders?

The 2023 KTM 450 EXC-F Six Days has a seat height of 960 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 450 EXC-F Six Days have?

The 2023 KTM 450 EXC-F Six Days uses double disc at the front and single disc with Brembo with single pistons at the rear.

What tyre sizes does the 2023 KTM 450 EXC-F Six Days use?

The front tyre size on the 2023 KTM 450 EXC-F Six Days is 1.60-21.

What fuel system does the 2023 KTM 450 EXC-F Six Days use?

The 2023 KTM 450 EXC-F Six Days uses Injection, providing precise fuelling across the rev range and reliable cold-start behaviour.

KTM 450 EXC-F Six Days Spec Evolution

The KTM 450 EXC-F Six Days was produced across 7 model years (2017-2023). 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	2017	2018	2019	2020	2021	2022	2023
Dry Weight	106.5 kg / 234.8 lbs	107 kg / 235.9 lbs	106 kg / 233.7 lbs	106 kg / 233.7 lbs	106 kg / 233.7 lbs	106 kg / 233.7 lbs	106 kg / 233.7 lbs
Engine Detail	Two titanium intake valves plus two steel exhaust valves	Two titanium intake valves plus two steel exhaust valves	Two titanium intake valves plus two steel exhaust valves	-	-	-	-
Fuel Capacity	8.50 litres / 2.25 gallons	8.50 litres / 2.25 gallons	8.50 litres / 2.25 US gallons	9.00 litres / 2.38 US gallons	9.20 litres / 2.43 US gallons	9.20 litres / 2.43 US gallons	9.20 litres / 2.43 US gallons
Displacement (cc)	449.30 cc	449.30 cc	449.3 cc	449.9 cc	449.9 cc	449.9 cc	449.9 cc
Displacement (ci)	27.42 cubic inches	27.42 cubic inches	27.42 cubic inches	27.45 cubic inches	27.45 cubic inches	27.45 cubic inches	27.45 cubic inches
Brakes - Front Diameter (in.)	10.2 inches	10.2 inches	-	-	-	-	-
Brakes - Front Diameter (mm)	260 mm	260 mm	-	-	-	-	-
Brakes - Rear Diameter (in.)	8.7 inches	8.7 inches	-	-	-	-	-

Key Specifications

Engine

Single cylinder, four-stroke

Power

Not recorded

Torque

Not recorded

Top Speed

Not recorded

Weight

106 kg / 233.7 lbs

Fuel Capacity

9.20 litres / 2.43 US gallons

Full 2023 KTM 450 EXC-F Six Days Specifications

Colours Orange/Blue/White/Red

Ground Clearance (in.) 14.0 inches

Ground Clearance (mm) 355 mm

Seat Height 960 mm / 37.8 in.

Dry Weight 106 kg / 233.7 lbs

Fuel Capacity 9.20 litres / 2.43 US gallons

Bore x Stroke (in,) 3.7 x 2.5 inches

Bore x Stroke (mm) 95.0 x 63.4 mm

Displacement (cc) 449.9 cc

Displacement (ci) 27.45 cubic inches

Engine Type Single cylinder, four-stroke

Fuel Control Single Overhead Cams (SOHC)

Stroke 4-stroke

CO2 85.4 CO2 g/km. (CO2 - Carbon dioxide emission)

Fuel System Injection

Emissions Euro 4

Fuel Consumption 3.68 litres/100 km (27.2 km/l or 63.92 mpg)

Ignition Keihin EMS

Starter Electric

Clutch Wet, DDS multi-disc clutch, Brembo hydraulics

Final Drive Chain (final drive)

Gearbox 6-speed

Primary Drive X-Ring 5/8 x 1/4´ chain

Frame Type 25CrMo4 steel central-tube

Suspension - Front WP XPLOR-USD, Ø 48 mm

Suspension - Rear WP Xplor PDS schock absorber

Wheel Travel - Front 300 mm / 11.8 in.

Wheel Travel - Rear 310 mm / 12.2 in.

Brakes - Front Double disc

Brakes - Rear Single disc. Brembo with single pistons

Tyres - Front 1.60-21

Specifications are compiled from manufacturer documentation and cross-referenced technical sources, and corrected on an ongoing basis. Spot an error? Let us know.