Motocross Bikes
2027KTM 450 SX-F
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The KTM 450 SX-F carries into 2027 as KTM's flagship 450 motocross racer, powered by a 449.9cc single-cylinder engine producing a claimed 63 hp through a 5-speed gearbox, Brembo-actuated wet clutch, and chain final drive. A chromoly steel frame with an aluminium-reinforced subframe, WP XACT air fork, and WP XACT monoshock keep weight to a claimed 102.6 kg dry, with a 958mm seat height built for an aggressive, standing riding style. It remains a pure competition machine aimed at motocross racing rather than street or trail use.
- Capacity
- 449.9 ccm
- Engine
- Single, four-stroke
- Gearbox
- 5-speed
- Dry weight
- 102.6 kg
- Seat height
- 958 mm
- Power
- 63.0 HP (46.3 kW)
What’s new for the 2027 KTM 450 SX-F
vs the 2026| Spec | 2026 | 2027 |
|---|---|---|
| Torque | 46.8 Nm (4.8 kgf-m or 34.5 ft.lbs) @ 7700 RPM | not listed |
Other years
2007
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2026
2027
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Built exclusively for motocross racing and serious off-road riding, not for street use or commuting.
- Built for
- A razor-sharp, high-revving single-cylinder racer that feels explosive and light, prioritizing agility and acceleration out of corners over outright top speed or stability.
- Not ideal for
- Not suitable for new riders, daily commuting, passengers, or anyone seeking comfort, storage, or long-distance touring capability.
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
- 449.9 ccm
- Power
- 63.0 HP (46.3 kW)
- Engine type
- Single, four-stroke
- Power/weight ratio
- 0.6140 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
Transmission
- Gearbox
- 5-speed
- Transmission type
- Manual
- Final drive
- Chain
- Clutch
- Wet, DDS multi-disc clutch, Brembo hydraulics
Dimensions & weight
- Wheelbase
- 1493 mm
- Seat height
- 958 mm
- Dry weight
- 102.6 kg
- Fuel capacity
- 7.20 litres
- Ground clearance
- 343 mm
Chassis & suspension
- Frame
- Central double-cradle-type 25CrMo4 steel. Aluminum-reinforced polyamide subframe.
- Front suspension
- WP XACT-USD (AER), Ø 48 mm
- Rear suspension
- WP XACT Monoshock with linkage
- Front wheel travel
- 310 mm
- Rear wheel travel
- 300 mm
- Rake (fork angle)
- 26.1°
Brakes & wheels
- Front brakes
- Single disc. Brake calipers on floating bearings
- Rear brakes
- Single disc. Brake calipers on floating bearings
- Front tyre
- 80/100-21
- Rear tyre
- 110/90-19
Other
- Color options
- Orange/white/grey
- Comments
- Connectivity.
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 | 2022 | 2027 |
|---|---|---|---|---|---|
| Capacity | 449 cc | 449 cc | 449 cc | 449 cc | 450 cc |
| Dry weight | 104 kg | 108 kg | 100 kg | 101 kg | 103 kg |
| Seat height | 925 mm | 992 mm | 960 mm | 950 mm | 958 mm |
| Fuel capacity | 8 L | 7.5 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 2027 KTM 450 SX-F has a Capacity of 449.9 ccm (27.45 cubic inches).
What engine power does the KTM 450 SX-F have?
The 2027 KTM 450 SX-F has a Power of 63.0 HP (46.3 kW).
How many gears does the KTM 450 SX-F have?
The 2027 KTM 450 SX-F has a Gearbox of 5-speed.
How much does the KTM 450 SX-F weigh?
The 2027 KTM 450 SX-F has a Dry weight of 102.6 kg (226.2 pounds).
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