What category is the 2021 KTM 450 SX-F?

The 2021 KTM 450 SX-F has a Category of Cross / motocross.

What is the engine size of the 2021 KTM 450 SX-F?

The 2021 KTM 450 SX-F has a Capacity: of 449.3 ccm (27.42 cubic inches).

What type of engine does the 2021 KTM 450 SX-F have?

The 2021 KTM 450 SX-F has a Engine type of Single cylinder, four-stroke.

What is the engine power of the 2021 KTM 450 SX-F?

The 2021 KTM 450 SX-F has a Power of 63.0 HP (46.0 kW).

Is the 2021 KTM 450 SX-F air cooled or liquid cooled?

The 2021 KTM 450 SX-F has a Cooling system of Liquid.

How many gears does the 2021 KTM 450 SX-F have?

The 2021 KTM 450 SX-F has a Gearbox of 4-speed.

How much does the 2021 KTM 450 SX-F weigh?

The 2021 KTM 450 SX-F has a Dry weight of 100.0 kg (220.5 pounds).

What is the seat height of the 2021 KTM 450 SX-F?

The 2021 KTM 450 SX-F has a Seat height of 950 mm (37.4 inches) If adjustable, lowest setting..

KTM 450 SX-F - 2021 Specifications and Reviews

Name: 2021 KTM 450 SX-F
Brand: KTM

The 2021 KTM 450 SX-F is a competitive four-stroke motocross bike designed for experienced riders seeking reliable performance in professional and amateur racing environments. Known for its potent 63 horsepower single-cylinder engine and precise Brembo hydraulic braking, it delivers strong acceleration and excellent handling on both tracks and natural terrain. This machine excels in high-speed racing applications where power delivery and durability are paramount.

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2021

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General information
Category	Cross / motocross
Year	2021
Model	KTM 450 SX-F
Engine and Transmission Specifications
Driveline	5/8 x 1/4
Clutch	Wet, DDS multi-disc clutch, Brembo hydraulics
Transmission type	Chain (final drive)
Gearbox	4-speed
Cooling system	Liquid
Ignition	Keihin EMS
Fuel control	Single Overhead Cams (SOHC)
Fuel system	Injection
Bore x Stroke	95.0 x 63.4 mm (3.7 x 2.5 inches)
Power	63.0 HP (46.0 kW)
Engine type	Single cylinder, four-stroke
Capacity:	449.3 ccm (27.42 cubic inches)
Brakes, suspension, Frame and wheels
Wheels	CNC machined hubs. Excel rims. Wire spoked.
Rear brakes	Single disc. Brake calipers on floating bearings
Diameter	260 mm (10.2 inches)
Front brakes	Single disc. Brake calipers on floating bearings
Rear wheel travel	300 mm (11.8 inches)
Rear Suspension	WP XACT Monoshock with linkage
Front wheel travel	310 mm (12.2 inches)
Front Suspension	WP XACT-USD, Ã˜ 48 mm
Rake (fork angle)	26.1°
Frame type	25CrMo4 steel central-tube

Physical measures and capacities
Fuel capacity	7.00 litres (1.85 US gallons)
Wheelbase	1485 mm (58.5 inches)
Ground clearance	370 mm (14.6 inches)
Seat height	950 mm (37.4 inches) If adjustable, lowest setting.
Power/weight ratio	0.6300 HP/kg
Dry weight	100.0 kg (220.5 pounds)
Other specs
Maintenance	Find parts, fluids, filters, maintenance tools and service items on eBay
Electrical	Lightweight 495 g lithium-ion starter battery
Starter	Electric
Color options	Orange/white/black

Performance Profile & Rider Fit

Best For

Track92%

City10%

Cornering90%

Daily Riding15%

Touring10%

Passenger5%

Rider Profile

Best For	This is a purebred motocross machine best suited to experienced off-road or competitive riders, not beginners.
Purpose	Built for motocross racing and aggressive off-road riding on tracks and rough terrain.
Rider Fit	The tall 958 mm seat height, high ground clearance, and firm suspension demand strong rider fitness and confident bike control.
Character	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.

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

Rider Fit Visualizer

2021 KTM 450 SX-F Rider Ergonomics Assessment

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Feet:

At 950mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with cannot reach comfortably on the 2021 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

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MotorcycleDB Review

The 2021 KTM 450 SX-F is an impressive motorcycle that offers top-of-the-line performance and handling. With its powerful 450cc engine, this bike delivers robust acceleration and plenty of torque for tackling any terrain. The lightweight frame and superior suspension make for precise handling and control, while the ergonomically designed seat and controls enhance rider comfort. Whether you're hitting the motocross track or tearing up the trails, the 2021 KTM 450 SX-F is a top contender in the world of off-road motorcycles. Overall, the 2021 KTM 450 SX-F is a standout choice for riders looking for a high-performance off-road motorcycle. Its combination of power, agility, and rider-friendly features make it a top pick in its class. With KTM's reputation for quality and innovation, the 450 SX-F is a solid investment for anyone serious about off-road riding.