KTM 450 SX-F - 2020 Specifications and Reviews

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.

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General information

CategoryCross / motocross
Year2020
ModelKTM 450 SX-F
 
 

Engine and Transmission Specifications

Driveline5/8 x 1/4
ClutchWet, DDS multi-disc clutch, Brembo hydraulics
Transmission typeChain   (final drive)
Gearbox4-speed
Cooling systemLiquid
IgnitionKeihin EMS
Fuel controlSingle Overhead Cams (SOHC)
Fuel systemInjection
Bore x Stroke95.0 x 63.4 mm (3.7 x 2.5 inches)
Power63.0 HP (46.0 kW)
Engine typeSingle cylinder, four-stroke
Capacity:449.3 ccm (27.42 cubic inches)

Brakes, suspension, Frame and wheels

WheelsCNC machined hubs. Excel rims. Wire spoked.
Rear brakesSingle disc. Brake calipers on floating bearings
Diameter260 mm (10.2 inches)
Front brakesSingle disc. Brake calipers on floating bearings
Rear wheel travel310 mm (12.2 inches)
Rear SuspensionWP XACT Monoshock with linkage
Front wheel travel300 mm (11.8 inches)
Front SuspensionWP XACT-USD, Ø 48 mm
Rake (fork angle)26.5°
Frame type25CrMo4 steel central-tube frame

Physical measures and capacities

Fuel capacity7.00 litres (1.85 US gallons)
Wheelbase1485 mm (58.5 inches)
Ground clearance370 mm (14.6 inches)
Seat height950 mm (37.4 inches) If adjustable, lowest setting.
Power/weight ratio0.6300 HP/kg
Dry weight100.0 kg (220.5 pounds)

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
ElectricalLightweight 495 g lithium-ion starter battery
StarterElectric
Color optionsOrange/white/black

Performance Profile & Rider Fit

Best For

Track92%
City10%
Cornering90%
Daily Riding15%
Touring10%
Passenger5%

Rider Profile

Best ForThis is a purebred motocross machine best suited to experienced off-road or competitive riders, not beginners.
PurposeBuilt for motocross racing and aggressive off-road riding on tracks and rough terrain.
Rider FitThe tall 958 mm seat height, high ground clearance, and firm suspension demand strong rider fitness and confident bike control.
CharacterA light, explosive, high-revving single-cylinder racer that rewards aggressive input with razor-sharp agility and jump-ready suspension.
Not Ideal ForThis bike is not suited to riders wanting a comfortable commuter, long-distance tourer, or a passenger-friendly ride.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Fit Visualizer

2020 KTM 450 SX-F Rider Ergonomics Assessment

Calculated in your browser only - your height/inseam are never sent to our servers.

Feet:

At 950mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with cannot reach comfortably on the 2020 KTM 450 SX-F, with a cramped knee angle of around 85 degrees and an upright riding position.

Data quality: measured. Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

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Rider Reviews

Total comments: 1
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MotorcycleDB Review

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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