Motocross Bikes
2020KTM 450 SX-F
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The 2020 KTM 450 SX-F is a high-performance four-stroke motocross bike designed for competitive riders seeking championship-level performance. Known for its lightweight construction at 100 kg and powerful engine delivering 0.63 HP per kilogram, it excels in professional racing environments. The bike features WP XACT suspension, electric start, and advanced braking technology for superior handling and control on demanding tracks.
- Capacity
- 449.3 ccm
- Engine
- Single, four-stroke
- Gearbox
- 4-speed
- Dry weight
- 100.0 kg
- Seat height
- 950 mm
- Power
- 63.0 HP (46.0 kW)
What’s new for the 2020 KTM 450 SX-F
vs the 2019| Spec | 2019 | 2020 |
|---|---|---|
| Power | 56.0 HP (41.2 kW) | 63.0 HP (46.0 kW) |
| Torque | 44.1 Nm (4.5 kgf-m or 32.5 ft.lbs) @ 6800 RPM | 45.7 Nm (4.7 kgf-m or 33.7 ft.lbs) @ 7000 RPM |
| Seat height | 960 mm (37.8 inches) | 950 mm (37.4 inches) |
| Front suspension | WP-USD, AER 48, Ø 48 mm | WP XACT-USD, Ø 48 mm |
| Rear suspension | WP shock absorber with linkage | WP XACT Monoshock with linkage |
Other years
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Built for motocross racing and aggressive off-road riding on tracks and rough terrain.
- Built for
- A light, explosive, high-revving single-cylinder racer that rewards aggressive input with razor-sharp agility and jump-ready suspension.
- Not ideal for
- This bike is not suited to riders wanting a comfortable commuter, long-distance tourer, or a passenger-friendly ride.
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
- 63.0 HP (46.0 kW)
- Torque
- 45.7 Nm (4.7 kgf-m) @ 7000 RPM
- Engine type
- Single, four-stroke
- Power/weight ratio
- 0.6300 HP/kg (dry)
- Bore x stroke
- 95.0 x 63.4 mm
- Compression
- 12.8:1
- Cooling system
- Liquid
- Fuel system
- Injection
- Starting
- Electric
- Ignition
- Keihin EMS
- Valves per cylinder
- 4
- Lubrication system
- Pressure circulation lubrication with two Eaton pumps
Transmission
- Gearbox
- 4-speed
- Transmission type
- Manual
- Final drive
- Chain
- Clutch
- Wet, DDS multi-disc clutch, Brembo hydraulics
Dimensions & weight
- Wheelbase
- 1485 mm
- Seat height
- 950 mm
- Dry weight
- 100.0 kg
- Fuel capacity
- 7.00 litres
- Ground clearance
- 370 mm
Chassis & suspension
- Frame
- 25CrMo4 steel central-tube frame
- Front suspension
- WP XACT-USD, Ø 48 mm
- Rear suspension
- WP XACT Monoshock with linkage
- 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
- 80/100-21
- Rear tyre
- 110/90-19
Other
- Color options
- Orange/white/black
- Comments
- Torque is a rear-wheel dyno figure.
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 | 2007 | 2012 | 2017 | 2020 | 2022 | 2027 |
|---|---|---|---|---|---|---|
| Capacity | 449 cc | 449 cc | 449 cc | 449 cc | 449 cc | 450 cc |
| Dry weight | 104 kg | 108 kg | 100 kg | 100 kg | 101 kg | 103 kg |
| Seat height | 925 mm | 992 mm | 960 mm | 950 mm | 950 mm | 958 mm |
| Fuel capacity | 8 L | 7.5 L | 7 L | 7 L | 7.5 L | 7.2 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 SX-F?
The 2020 KTM 450 SX-F has a Capacity of 449.3 ccm (27.42 cubic inches).
What engine power does the KTM 450 SX-F have?
The 2020 KTM 450 SX-F has a Power of 63.0 HP (46.0 kW).
How many gears does the KTM 450 SX-F have?
The 2020 KTM 450 SX-F has a Gearbox of 4-speed.
What is the torque of the KTM 450 SX-F?
The 2020 KTM 450 SX-F has a Torque of 45.7 Nm (4.7 kgf-m or 33.7 ft.lbs) @ 7000 RPM.
How much does the KTM 450 SX-F weigh?
The 2020 KTM 450 SX-F has a Dry weight of 100.0 kg (220.5 pounds).
Shop this bike
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The 2020 KTM 450 SX-F is a powerful and reliable motocross bike that offers impressive performance on the track. With its lightweight and agile chassis, this bike is easy to handle and maneuver, making it a top choice for professional and amateur riders alike. The 450 SX-F is equipped with a 450cc engine that delivers exceptional power and torque, allowing riders to tackle even the most challenging terrain with ease. Additionally, the bike features top-of-the-line suspension and braking systems, ensuring a smooth and controlled ride every time.
Overall, the 2020 KTM 450 SX-F is a standout option in the motocross market, offering unparalleled performance and handling. Whether you're a seasoned pro or a recreational rider, this bike is sure to impress with its power, agility, and precision. With its top-notch components and advanced engineering, the 450 SX-F is a force to be reckoned with on the track. If you're looking for a high-performance motocross bike that can handle anything you throw at it, the KTM 450 SX-F is definitely worth considering.
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