KTM 450 SX-F

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KTM 450 SX-F - Most powerful motocross motorcycle from KTM. The engine is not only powerful, it is also the quietest in the class. The WP suspension components are improved every year.

The KTM motorcycle is the lightest in the 450 class. It is equipped with advanced components such as an electric starter, Brembo braking system and a hydraulic clutch. All these qualities make the SX-F an excellent cross-country bike.


Main competitors:


As of 2019, the KTM 450 SX-F engine features a more compact cylinder head. It is 15mm lower and 500g lighter than the 2018 model. The motocross bike is equipped with a Pankl transmission, 44mm throttle body, new ECU cards, lithium-ion starting battery, modified air intake. In addition, the traction control function has been improved and the launch control has been reconfigured. The KTM 450 SX-F delivers power smoothly and predictably. The SX-F has two modes of operation, which are activated by a dedicated switch on the left side of the steering wheel.

450SX-F ENGINE.png


The SX and XC come with a WP XACT fork and rear shock, while the W and EXC come with XPLOR suspension. In particular, the Factory Edition fork has calibrated pistons for tighter mating, which makes it possible to increase the pressure in the forks. The rear shock has a preload adjuster for more precise adjustment. The traverses resemble the Xtrig traverse structure, but the aluminum profile is much more rounded and more milled in the center sections.

450SX-F FRAME.png



Specifications KTM 450 SX-F:

Model KTM 450 SX-F
Motorcycle type Cross
Release year 2006-
Frame 25CrMo4
Engine type 1-cylinder, 4-stroke, in-line
Working volume 449.9 cm³
Bore / Stroke 95 x 63.4 mm
Compression ratio 12.5: 1
Cooling liquid
Number of valves per cylinder SOHC, 4 valves per cylinder
Fuel supply system Keihin EFI
Ignition type Keihin EMS
Maximum power 62.00 h.p.

63.00 h.p. (2021+)

Maximum torque 50.00 Nm
Gearbox 5-speed
Clutch Wet multi-disc DDS, hydraulically operated by Brembo
Drive type chain
Front tire size 80/100 R21
Rear tire size 110/90 R19
Front brakes 260 mm
Rear brakes 220 mm
Front suspension WP Ø48mm stroke - 310mm
Rear suspension WP monoshock, 300mm travel
Minimum ground clearance 370 mm
Saddle height 950 mm
Fuel tank capacity 7 l
Motorcycle weight (dry) 100 kg
Dynamometric test
2021 ktm 450 sxf dyno.jpg

KTM Motorcycles

Off-road 85-250 см³ Freeride 250 F · 250 EXC · 250 EXC-F · 250 SX-F
251-400 см³ Freeride 350 F · 300 EXC · 350 EXC-F · 350 SX-F
401-750 см³ 450 EXC-F · 450 SX-F · 500 EXC-F · 690 Enduro
Supermoto 401-750 см³ 690 SMC R · 690 Supermoto