Motocross Bikes
2019KTM 450 SX-F
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The 2019 KTM 450 SX-F is a high-performance four-stroke motocross bike engineered for competitive and experienced off-road riders. Known for its lightweight construction at just 100kg and potent engine delivery, it excels in both MX racing and aggressive trail riding. The bike features advanced WP suspension, precision braking, and electric start technology for reliable performance at the highest levels.
- Capacity
- 449.3 ccm
- Engine
- Single, four-stroke
- Gearbox
- 4-speed
- Dry weight
- 100.0 kg
- Seat height
- 960 mm
- Power
- 56.0 HP (41.2 kW)
What’s new for the 2019 KTM 450 SX-F
vs the 2018| Spec | 2018 | 2019 |
|---|---|---|
| Torque | — | 44.1 Nm (4.5 kgf-m or 32.5 ft.lbs) @ 6800 RPM |
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
- 56.0 HP (41.2 kW)
- Torque
- 44.1 Nm (4.5 kgf-m) @ 6800 RPM
- Engine type
- Single, four-stroke
- Power/weight ratio
- 0.5600 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
- 960 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-USD, AER 48, Ø 48 mm
- Rear suspension
- WP shock absorber 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 | 2019 | 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 | 960 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 2019 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 2019 KTM 450 SX-F has a Power of 56.0 HP (41.2 kW).
How many gears does the KTM 450 SX-F have?
The 2019 KTM 450 SX-F has a Gearbox of 4-speed.
What is the torque of the KTM 450 SX-F?
The 2019 KTM 450 SX-F has a Torque of 44.1 Nm (4.5 kgf-m or 32.5 ft.lbs) @ 6800 RPM.
How much does the KTM 450 SX-F weigh?
The 2019 KTM 450 SX-F has a Dry weight of 100.0 kg (220.5 pounds).
Shop this bike
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The 2019 KTM 450 SX-F is a top-of-the-line motocross bike that delivers incredible power and performance. With its 450cc engine, this bike is designed for serious off-road enthusiasts who demand the best. The lightweight frame and advanced suspension system make for a smooth and controlled ride, while the ergonomic design and comfortable seat ensure that riders can stay comfortable during long races or off-road adventures. Overall, the 2019 KTM 450 SX-F is a top choice for riders who want a high-performance bike that can handle the toughest terrain.
The 2019 KTM 450 SX-F is a force to be reckoned with on the motocross track. Its powerful engine and advanced suspension system make for a smooth and controlled ride, while the lightweight frame and ergonomic design ensure that riders can push the limits without feeling fatigued. With its top-of-the-line performance and reliable construction, the 2019 KTM 450 SX-F is a top choice for serious off-roaders who demand the best.
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