Motocross Bikes
2021KTM 450 XC-F
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The 2021 KTM 450 XC-F is a competitive enduro bike engineered for experienced off-road riders tackling technical terrain and cross-country racing. Its potent 449cc single-cylinder four-stroke engine delivers strong power delivery with excellent fuel injection precision, complemented by responsive Brembo hydraulic braking and a reliable six-speed transmission. Best known for its lightweight construction and nimble handling, this machine excels in demanding trail conditions and enduro competition.
- Capacity
- 449.3 ccm
- Engine
- Single, four-stroke
- Gearbox
- 5-speed
- Dry weight
- 101.0 kg
- Seat height
- 950 mm
- Power
- 50.0 HP (36.8 kW)
What’s new for the 2021 KTM 450 XC-F
vs the 2020| Spec | 2020 | 2021 |
|---|---|---|
| Dry weight | 109.5 kg (241.4 pounds) | 101.0 kg (222.7 pounds) |
| Seat height | 992 mm (39.1 inches) | 950 mm (37.4 inches) |
| Fuel capacity | 9.00 litres (2.38 US gallons) | 8.50 litres (2.25 US gallons) |
| Front suspension | WP Suspension Up Side Down 4860 MXMA CC | WP XACT-USD, Ø 48 mm |
| Rear suspension | WP Suspension 5018 BAVP DCC | WP XACT Monoshock with linkage |
| Front brakes | Single disc. Brake calipers on floating bearings | Single disc |
| Rear brakes | Single disc. Brake calipers on floating bearings | Single disc |
| Wheelbase | 1495 mm (58.9 inches) | 1482 mm (58.3 inches) |
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Built for cross-country and enduro-style racing, prioritizing light weight, high-revving power delivery, and serious suspension travel over comfort or practicality.
- Built for
- A raw, high-strung single-cylinder racer that rewards an active, aggressive riding style and punishes passive throttle input.
- Not ideal for
- This is not a good fit for new riders, commuters, or anyone wanting a comfortable, low-maintenance road-going machine.
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 usEngine
- Capacity
- 449.3 ccm
- Power
- 50.0 HP (36.8 kW)
- Engine type
- Single, four-stroke
- Power/weight ratio
- 0.4950 HP/kg (dry)
- Bore x stroke
- 95.0 x 63.4 mm
- Compression
- 13.0:1
- Cooling system
- Liquid
- Fuel system
- Injection
- Starting
- Electric
- Ignition
- Keihin EMS
- Lubrication system
- Pressure circulation lubrication with two Eaton pumps
Transmission
- Gearbox
- 5-speed
- Transmission type
- Manual
- Final drive
- Chain
- Clutch
- Wet, DDS multi-disc clutch, Brembo hydraulics
Dimensions & weight
- Wheelbase
- 1482 mm
- Seat height
- 950 mm
- Dry weight
- 101.0 kg
- Fuel capacity
- 8.50 litres
- Ground clearance
- 370 mm
Chassis & suspension
- Frame
- Central double-cradle-type 25CrMo4 steel
- Front suspension
- WP XACT-USD, Ø 48 mm
- Rear suspension
- WP XACT Monoshock with linkage
- Front wheel travel
- 310 mm
- Rear wheel travel
- 300 mm
- Rake (fork angle)
- 26.5°
Brakes & wheels
- Front brakes
- Single disc
- Front brakes diameter
- 260 mm
- Rear brakes
- Single disc
- Rear brakes diameter
- 220 mm
Other
- Color options
- Orange/white/black
Specs last verified against published sources: .
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 | 2014 | 2017 | 2021 | 2024 | 2027 |
|---|---|---|---|---|---|
| Capacity | 449 cc | 449 cc | 449 cc | 450 cc | 450 cc |
| Dry weight | 110 kg | 110 kg | 101 kg | 105 kg | 105 kg |
| Seat height | 992 mm | 992 mm | 950 mm | 954 mm | 954 mm |
| Fuel capacity | 9 L | 9 L | 8.5 L | 8.5 L | 8.5 L |
Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.
Rider Reviews
Common questions
What is the engine size of the KTM 450 XC-F?
The 2021 KTM 450 XC-F has a Capacity of 449.3 ccm (27.42 cubic inches).
What engine power does the KTM 450 XC-F have?
The 2021 KTM 450 XC-F has a Power of 50.0 HP (36.8 kW).
How many gears does the KTM 450 XC-F have?
The 2021 KTM 450 XC-F has a Gearbox of 5-speed.
How much does the KTM 450 XC-F weigh?
The 2021 KTM 450 XC-F has a Dry weight of 101.0 kg (222.7 pounds).
Shop this bike
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The 2021 KTM 450 XC-F is a powerful and versatile off-road motorcycle that is designed to conquer any type of terrain. With a lightweight frame and a powerful 450cc engine, this bike offers exceptional performance and handling. The adjustable suspension allows riders to customize their ride for maximum comfort and control, while the ergonomic design ensures a comfortable and confident riding position. Whether you're hitting the trails or competing in a race, the 2021 KTM 450 XC-F is a top choice for riders who demand nothing but the best off-road experience.
Overall, the 2021 KTM 450 XC-F is a great option for riders looking for a high-performance off-road motorcycle. With its powerful engine, adjustable suspension, and comfortable design, this bike is versatile enough to handle a variety of off-road conditions. Whether you're a seasoned rider or just starting out, the KTM 450 XC-F offers the performance and reliability you need to take your off-road adventures to the next level.
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