Ktm Sx-f 450
The KTM SX-F 450 was introduced in 2005 as KTM's premier 450cc motocross machine, building on the success of their SX-F lineup to compete at the highest level of the sport. It gained widespread recognition through numerous MX1/MXGP and AMA Motocross championship victories, becoming one of the most decorated motocross bikes in history with riders like Ryan Dungey, Marvin Musquin, and Jeffrey Herlings. Known for its lightweight chromoly steel frame, advanced fuel injection (introduced in 2012), and class-leading power-to-weight ratio, it remains a benchmark in the 450cc motocross segment.
~63 hp
Power
~54 Nm
Torque
101 kg
Weight
~175 km/h (estimated; note: varies with gearing and terrain)
Top Speed
~6-9 L/100km (estimated real-world; varies heavily with riding intensity — note: no official figure provided by KTM for off-road race use)
Fuel
Naked
Body
What Buyers Should Know
Engine Rebuild Intervals
The high-performance 450cc engine requires top-end rebuilds every 40-60 hours of hard riding. Always ask sellers for maintenance logs, as neglected valve checks are the most common source of costly failures.
Strong Resale Value
KTM SX-F 450s hold their value exceptionally well compared to Japanese competitors, often retaining 70-80% of value after one year. Low-hour, well-maintained examples are in consistently high demand.
Race-Ready From Factory
The bike ships with a fully adjustable WP XACT suspension and a race-tuned map, making it one of the few motocross bikes competitive at pro level straight off the showroom floor.
Full Specifications
Rivals & Alternatives
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