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Enduro Bikes

2021KTM 450 EXC-F

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The 2021 KTM 450 EXC-F is a powerful single-cylinder enduro bike engineered for serious off-road riders tackling technical terrain and long-distance adventures. Its potent 450cc four-stroke engine delivers aggressive performance while the fuel-injected system and efficient cooling keep it reliable in demanding conditions. Known for aggressive power delivery and versatility across varied terrain, it excels for experienced riders seeking peak performance.

Capacity
449.9 ccm
Engine
Single, four-stroke
Gearbox
6-speed
Dry weight
105.5 kg
Seat height
960 mm
Power
50.0 HP (36.8 kW)

What’s new for the 2021 KTM 450 EXC-F

vs the 2020
Spec20202021
Front suspension WP USD WP XPLOR-USD, Ø 48 mm
Other years 2017 2018 2019 2020 2021 2022 2023 2024

How it rides

Editorial estimate from the spec sheet - not lab tested
Speed 52Agility 94Comfort 35Off-road 98Touring 25Road manners 30
Off-road & trail98%
Cornering80%
City riding15%
Daily riding15%
Touring20%
Two-up5%
Track40%
Best for
Built for serious enduro and trail riding, including technical terrain, tight woods, and competitive off-road events like Six Days-style challenges.
Built for
A high-strung, race-bred single-cylinder machine that rewards active riding with sharp handling, explosive throttle response, and razor-thin road manners.
Not ideal for
Not suited to riders wanting a comfortable commuter, a passenger-friendly bike, or long paved highway touring.

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 us
At 960mm, a rider of 68.9" with a 31" (estimated) inseam will not reach the ground comfortably on the 2021 KTM 450 EXC-F, with a cramped knee angle of around 85 degrees and an upright riding position.

Assumes about 30mm of suspension sag once seated. This is an approximation from category-typical geometry, not a measurement of this bike or of you - sit on one before you buy.

More bikes at over 900 mm — Sky High →

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Full specifications

Engine
Capacity
449.9 ccm
Power
50.0 HP (36.8 kW)
CO2 Emissions
85 CO2 g/km
Engine type
Single, four-stroke
Fuel consumption
3.70 litres/100 km (27.0 km/l)
Power/weight ratio
0.4739 HP/kg (dry)
Bore x stroke
95.0 x 63.4 mm
Cooling system
Liquid
Fuel system
Injection
Starting
Electric
Ignition
Keihin EMS
Torque
Not on record - add it
Transmission
Gearbox
6-speed
Transmission type
Manual
Final drive
Chain
Clutch
Wet, DDS multi-disc clutch, Brembo hydraulics
Dimensions & weight
Wheelbase
1482 mm
Seat height
960 mm
Dry weight
105.5 kg
Fuel capacity
9.20 litres
Ground clearance
355 mm
Chassis & suspension
Frame
25CrMo4 steel central-tube
Front suspension
WP XPLOR-USD, Ø 48 mm
Rear suspension
WP Xplor PDS shock absorber
Front wheel travel
300 mm
Rear wheel travel
310 mm
Rake (fork angle)
26.5°
Brakes & wheels
Front brakes
Single disc. Brake calipers on floating bearings
Front brakes diameter
260 mm
Rear brakes
Single disc. Brake calipers on floating bearings
Rear brakes diameter
220 mm
Front tyre
1.60-21
Rear tyre
2.15-18
Other
Color options
Orange/white/black

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 20172019202120222024
Capacity 449 cc 449 cc 450 cc 450 cc 450 cc
Dry weight 106 kg 101 kg 106 kg 106 kg 107 kg
Seat height 960 mm 960 mm 960 mm 960 mm 963 mm
Fuel capacity 8.5 L 8.5 L 9.2 L 9.2 L 8.5 L

Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.

Rider Reviews

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MotorcycleDB Review

The 2021 KTM 450 EXC-F is a powerful and versatile off-road motorcycle that is perfect for riders who love adventure and trail riding. With a 450cc engine and lightweight chassis, this bike offers excellent handling and agility in rough terrain. The fuel-injected engine provides smooth and consistent power delivery, making it easy to navigate through challenging off-road conditions. With top-notch suspension and braking components, the 2021 KTM 450 EXC-F offers exceptional performance and control, giving riders the confidence to tackle any trail with ease.

Overall, the 2021 KTM 450 EXC-F is a top-of-the-line off-road motorcycle that delivers an exhilarating riding experience. Whether you're hitting the trails for a weekend adventure or competing in off-road races, this bike is a fantastic choice. With its powerful engine, lightweight design, and top-quality components, the 2021 KTM 450 EXC-F is sure to impress even the most demanding riders. If you're in the market for a high-performance off-road motorcycle, the 2021 KTM 450 EXC-F is definitely worth considering.

Common questions

What is the engine size of the KTM 450 EXC-F?

The 2021 KTM 450 EXC-F has a Capacity of 449.9 ccm (27.45 cubic inches).

What engine power does the KTM 450 EXC-F have?

The 2021 KTM 450 EXC-F has a Power of 50.0 HP (36.8 kW).

How many gears does the KTM 450 EXC-F have?

The 2021 KTM 450 EXC-F has a Gearbox of 6-speed.

How much does the KTM 450 EXC-F weigh?

The 2021 KTM 450 EXC-F has a Dry weight of 105.5 kg (232.6 pounds).

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