KTM 450 EXC-F Six Days - 2021 Specifications and Reviews

The 2021 KTM 450 EXC-F Six Days is a competitive enduro machine built for experienced off-road riders tackling demanding terrain and multi-day events. Powered by a nimble 450cc liquid-cooled four-stroke engine paired with WP suspension technology, it delivers responsive performance and excellent fuel efficiency. This model excels in technical riding situations where precision handling and reliable power delivery are paramount.

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General information

CategoryEnduro / offroad
Year2021
ModelKTM 450 EXC-F Six Days
 
 

Engine and Transmission Specifications

Emission detailsEuro 4
Greenhouse gases85.4 CO2 g/km. (CO2 - Carbon dioxide emission)
Fuel consumption3.68 litres/100 km (27.2 km/l or 63.92 mpg)
ClutchWet multi-disc
Transmission typeChain   (final drive)
Cooling systemLiquid
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. Brembo with single pistons
Diameter260 mm (10.2 inches)
Front brakesDouble disc
Rear wheel travel310 mm (12.2 inches)
Rear SuspensionWP Xplor PDS schock absorber
Front wheel travel300 mm (11.8 inches)
Front SuspensionWP XPLOR-USD, Ø 48 mm
Frame type25CrMo4 steel central-tube frame

Physical measures and capacities

Fuel capacity9.20 litres (2.43 US gallons)
Ground clearance355 mm (14.0 inches)
Seat height960 mm (37.8 inches) If adjustable, lowest setting.
Dry weight106.0 kg (233.7 pounds)

Other specs

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

Performance Profile & Rider Fit

Best For

Track40%
City15%
Cornering85%
Daily Riding15%
Touring20%
Passenger5%

Rider Profile

Best ForThis bike is built for experienced off-road riders and competition-level enduro racers, not beginners.
PurposeIt's a purpose-built extreme enduro and hard-terrain competition machine, closely derived from KTM's factory Six Days race edition.
Rider FitAt just over 106 kg dry weight with a tall 960 mm seat, it demands good fitness, strong legs, and confident standing-riding technique.
CharacterSharp, light, and explosive, it rewards aggressive throttle control and precise body positioning with race-bred agility over rocks, roots, and ruts.
Not Ideal ForThis is not a good fit for commuting, casual road riding, two-up touring, or anyone wanting a comfortable, low-maintenance daily bike.

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 Six Days 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 Six Days, with a cramped knee angle of around 85 degrees and an upright riding position.

Data quality: estimated (wheelbase estimated from this category's typical bike, not this model's own spec). 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 Six Days is a powerful and versatile off-road motorcycle that is perfect for experienced riders. This bike offers impressive performance and handling, making it a top choice for those who love to tackle tough terrain. With its lightweight frame and powerful engine, the 450 EXC-F Six Days delivers excellent agility and responsiveness, allowing riders to navigate challenging trails with ease. The bike's high-quality components and advanced technology make it a reliable and durable option for off-road enthusiasts. In addition to its exceptional performance, the 2021 KTM 450 EXC-F Six Days features a stylish design and comfortable ergonomics. Its Six Days special edition graphics and color scheme give it a unique and eye-catching appearance, while its comfortable seating position and intuitive controls ensure a pleasant riding experience. Whether you're hitting the trails for a day of adventure or participating in competitive off-road races, the 450 EXC-F Six Days is a top-tier choice for riders who demand the best from their motorcycle. With its impressive performance, durable construction, and stylish design, this KTM bike is a standout option for off-road enthusiasts.
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