2011KTM 450 SX-F

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The 2011 KTM 450 SX-F is a competition-focused four-stroke dirt bike designed for experienced enduro and motocross riders seeking maximum power and performance. Its liquid-cooled 449cc single-cylinder engine delivers aggressive throttle response and high RPM capability, while the five-speed transmission and hydraulic clutch provide precise control in demanding terrain. Known for its lightweight frame and potent power delivery, the 450 SX-F remains a top choice for professional and amateur racers competing at the highest levels.

Capacity: 449.3 ccm
Engine: Single, four-stroke
Gearbox: 5-speed
Dry weight: 106.9 kg
Seat height: 992 mm
Power: 56.0 HP (41.2 kW)

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What’s new for the 2011 KTM 450 SX-F

vs the 2010

Spec	2010	2011
Dry weight	104.6 kg (230.6 pounds)	106.9 kg (235.7 pounds)
Fuel capacity	8.00 litres (2.11 US gallons)	7.50 litres (1.98 US gallons)
Wheelbase	1475 mm (58.1 inches)	1495 mm (58.9 inches)

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

Off-road & trail98%

Cornering90%

City riding10%

Daily riding15%

Touring10%

Two-up5%

Track92%

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?

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Your height

Inseam (optional)

Units

At 992mm, a rider of 175cm with a 79cm (estimated) inseam will not reach the ground comfortably on the 2011 KTM 450 SX-F, with a moderate knee angle of around 90 degrees and an upright riding position.

Assumes about 30mm of suspension sag once seated. This is an approximation from category-typical geometry, not a measurement of this bike or of you - sit on one before you buy.

More bikes at over 900 mm — Sky High →

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Full specifications

Engine

Capacity: 449.3 ccm
Power: 56.0 HP (41.2 kW)
Engine type: Single, four-stroke
Power/weight ratio: 0.5239 HP/kg (dry)
Bore x stroke: 97.0 x 60.8 mm
Compression: 12.5:1
Cooling system: Liquid
Fuel system: Carburettor
Starting: Electric
Valves per cylinder: 4
Lubrication system: Pressure lubrication with 3 oil pumps

Transmission

Gearbox: 5-speed
Transmission type: Manual
Final drive: Chain
Clutch: Wet mDouble disk clutch, operated hydraulically

Dimensions & weight

Wheelbase: 1495 mm
Seat height: 992 mm
Dry weight: 106.9 kg
Fuel capacity: 7.50 litres
Ground clearance: 371 mm

Chassis & suspension

Frame: Central double-cradle-type 25CrMo4. Aluminium subframe.
Front suspension: WP-USD fork
Rear suspension: WP PDS shock absorber
Front wheel travel: 300 mm
Rear wheel travel: 330 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	2011	2012	2017	2022	2027
Capacity	449 cc	449 cc	449 cc	449 cc	449 cc	450 cc
Dry weight	104 kg	107 kg	108 kg	100 kg	101 kg	103 kg
Seat height	925 mm	992 mm	992 mm	960 mm	950 mm	958 mm
Fuel capacity	8 L	7.5 L	7.5 L	7 L	7.5 L	7.2 L