KTM has unveiled its all-new 2027 450 SX-F FACTORY EDITION and 250 SX-F FACTORY EDITION models, introducing the first examples of its next-generation motocross platform with significant revisions to the chassis, engines, suspension, ergonomics and overall design.

Developed with input from KTM’s factory racing programs in MXGP and SMX, the latest FACTORY EDITIONs build on the existing SX-F models with a comprehensive range of technical updates. The developments focus on three key areas – ride, power and competition – with many of the advancements set to influence the manufacturer’s upcoming SX motocross range.

Both models feature a redesigned frame, with KTM revising its geometry, steering head configuration and engine mounting points to reduce weight and improve handling characteristics. A new lightweight aluminum subframe further reduces mass, while an adjustable wheelbase and redesigned CNC-machined triple clamps provide additional scope to refine the chassis set-up.

Complementing the updated frame is a fully revised WP XACT closed-cartridge spring fork and rear shock combination, developed to deliver improved stability, compliance and predictable rider feedback across a variety of track conditions.

Ergonomics have also received attention, with a slimmer overall profile, increased leg contact area, a redesigned seat and updated footpeg surfaces. These changes are intended to improve rider movement and control, particularly when navigating demanding sections of the circuit.

Engine development represents another major advancement for 2027, with the 250 SX-F FACTORY EDITION receiving an extensively redesigned powerplant. An oval throttle body, revised oval intake ports, top-feed fuel injector and completely reworked valvetrain contribute to increased performance, while the compression ratio has been raised to 15.5:1 and the rev limit increased to 14,500 rpm.

Images: Supplied.

The 250cc engine is also positioned 2.3 millimeters higher within the frame to improve mass centralization, with the revised configuration drawing on technology developed through KTM’s MXGP team.

In addition, the 450 has also received engine refinements, with increased power peaking at 10,000 rpm. A new exhaust system, together with revised ECU calibration and fuel management, is designed to optimize throttle response and deliver more manageable power throughout the rev range.

Both FACTORY EDITIONs benefit from a lighter, more robust gearbox with smoother shifting characteristics, while a new engine management system incorporates an updated ECU capable of processing sensor information faster. Revised algorithms influence ignition, fueling and gear-dependent mapping, alongside improvements to Quickshifter functionality.

Further technical developments include an optimized cooling system, redesigned airbox and updated exhaust configuration, with KTM also placing an emphasis on improved accessibility and servicing requirements.

A selection of premium race-focused components completes the FACTORY EDITION specification, including Brembo braking systems with revised rear brake pads, lightweight Neken handlebars with two mounting positions, ODI lock-on grips and Excel wheels featuring an updated spoke arrangement.

WP Pro Components triple clamps and a start device also feature, alongside a Selle Dalla Valle seat cover and a redesigned hour meter for improved accessibility. Maintenance guidelines are also incorporated throughout the motorcycles to simplify servicing and preparation.

The 2027 KTM SX-F FACTORY EDITIONs provide an early indication of the technical direction for the manufacturer’s upcoming SX range, with the latest developments also forming the foundation of its ongoing factory racing efforts in MXGP and the SMX World Championship.

For complete details, visit www.ktm.com or contact your nearest KTM authorized dealer to reserve your 2027 KTM 450 SX-F or 250 SX-F FACTORY EDITION.