Motocross Bikes
2009KTM 450 SX-F
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The 2009 KTM 450 SX-F is a high-performance four-stroke motocross bike engineered for competitive riders seeking aggressive power delivery and precision handling. Its 449cc single-cylinder engine with liquid cooling and electronic ignition delivers potent mid-to-top-end grunt, making it ideal for experienced racers tackling challenging terrain and professional motocross circuits.
- Capacity
- 449.3 ccm
- Engine
- Single, four-stroke
- Gearbox
- 4-speed
- Dry weight
- 104.6 kg
- Seat height
- 985 mm
- Power
- 56.0 HP (41.2 kW)
What’s new for the 2009 KTM 450 SX-F
vs the 2008| Spec | 2008 | 2009 |
|---|---|---|
| Seat height | 960 mm (37.8 inches) | 985 mm (38.8 inches) |
| Fuel capacity | 8.20 litres (2.17 US gallons) | 8.00 litres (2.11 US gallons) |
| Rear suspension | WP Monoshock PDS | WP PDS shock absorber |
Other years
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
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)
- Engine type
- Single, four-stroke
- Power/weight ratio
- 0.5354 HP/kg
- Bore x stroke
- 97.0 x 60.8 mm
- Compression
- 12.5:1
- Cooling system
- Liquid
- Fuel system
- Carburettor
- Starting
- Electric
- Ignition
- Kokusan digital DC-CDI
- Valves per cylinder
- 4
- Lubrication system
- Pressure lubrication
Transmission
- Gearbox
- 4-speed
- Transmission type
- Manual
- Final drive
- Chain
- Clutch
- Wet multi-disc clutch, operated hydraulically
Dimensions & weight
- Wheelbase
- 1475 mm
- Seat height
- 985 mm
- Dry weight
- 104.6 kg
- Fuel capacity
- 8.00 litres
- Ground clearance
- 380 mm
Chassis & suspension
- Frame
- Central double-cradle-type 25 CrMo4. Aluminium subframe.
- Front suspension
- WP USD
- Rear suspension
- WP PDS shock absorber
- Front wheel travel
- 300 mm
- Rear wheel travel
- 335 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
- Front tyre
- 80/100-21
- Rear tyre
- 110/90-19
Other
- Color options
- Orange
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 | 2009 | 2012 | 2016 | 2021 | 2025 |
|---|---|---|---|---|---|---|
| Capacity | 449 cc | 449 cc | 449 cc | 449 cc | 449 cc | 450 cc |
| Dry weight | 104 kg | 105 kg | 108 kg | 100 kg | 100 kg | 103 kg |
| Seat height | 925 mm | 985 mm | 992 mm | 960 mm | 950 mm | 958 mm |
| Fuel capacity | 8 L | 8 L | 7.5 L | 7 L | 7 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 2009 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 2009 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 2009 KTM 450 SX-F has a Gearbox of 4-speed.
How much does the KTM 450 SX-F weigh?
The 2009 KTM 450 SX-F has a Dry weight of 104.6 kg (230.6 pounds).
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