KTM 450 EXC-F - 2021 Specifications and Reviews

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.

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General information

CategoryEnduro / offroad
Year2021
ModelKTM 450 EXC-F

Engine and Transmission Specifications

Emission detailsEuro IV
Greenhouse gases85.4 CO2 g/km. (CO2 - Carbon dioxide emission)
Fuel consumption3.68 litres/100 km (27.2 km/l or 63.92 mpg)
Driveline5/8 x 1/4
ClutchWet, DDS multi-disc clutch, Brembo hydraulics
Transmission typeChain   (final drive)
Gearbox6-speed
Cooling systemLiquid
IgnitionKeihin EMS
Fuel controlSingle Overhead Cams (SOHC)
Fuel systemInjection
Bore x Stroke95.0 x 63.4 mm (3.7 x 2.5 inches)
Engine typeSingle cylinder, four-stroke
Capacity:449.9 ccm (27.45 cubic inches)

Brakes, suspension, Frame and wheels

Rear brakesSingle disc. Brake calipers on floating bearings
Diameter260 mm (10.2 inches)
Front brakesSingle disc. Brake calipers on floating bearings
Rear wheel travel310 mm (12.2 inches)
Rear SuspensionWP Xplor PDS shock absorber
Front wheel travel300 mm (11.8 inches)
Front SuspensionWP XPLOR-USD, Ø 48 mm
Rake (fork angle)26.5°
Frame type25CrMo4 steel central-tube
 
 

Physical measures and capacities

Fuel capacity9.20 litres (2.43 US gallons)
Wheelbase1482 mm (58.3 inches)
Ground clearance355 mm (14.0 inches)
Seat height960 mm (37.8 inches) If adjustable, lowest setting.
Dry weight105.5 kg (232.6 pounds)

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
StarterElectric
Color optionsOrange/white/black

Performance Profile & Rider Fit

Best For

Track40%
City15%
Cornering80%
Daily Riding15%
Touring20%
Passenger5%

Rider Profile

Best ForThis bike suits experienced off-road riders who are comfortable with a tall, lightweight, aggressive enduro machine.
PurposeBuilt for serious enduro and trail riding, including technical terrain, tight woods, and competitive off-road events like Six Days-style challenges.
Rider FitIts tall seat height and minimal, firm off-road suspension setup demand good rider fitness, leg length, and standing-riding stamina.
CharacterA high-strung, race-bred single-cylinder machine that rewards active riding with sharp handling, explosive throttle response, and razor-thin road manners.
Not Ideal ForNot suited to riders wanting a comfortable commuter, a passenger-friendly bike, or long paved highway touring.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Fit Visualizer

2021 KTM 450 EXC-F Rider Ergonomics Assessment

Calculated in your browser only - your height/inseam are never sent to our servers.

Feet:

At 960mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with cannot reach comfortably on the 2021 KTM 450 EXC-F, with a cramped knee angle of around 85 degrees and an upright riding position.

Data quality: measured. Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

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Rider Reviews

Total comments: 1
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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.
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