KTM has unveiled the 2027 350 SX-F Factory Edition and 450 SX-F Factory Edition. They are KTM’s flagship four-stroke motocross models, introducing a new generation of engineering, developed with input from KTM’s factory racing teams competing in championships such as MXGP and AMA SuperMotocross.
Both motorcycles receive substantial revisions to their engines, chassis, suspension, ergonomics and exhaust systems, alongside a range of racing-focused components. The new Factory Editions also preview the technical direction of the upcoming 2028 KTM SX motocross range.
What is new about the 2027 KTM SX-F Factory Editions?
The 2027 KTM 250 SX-F and 450 SX-F Factory Editions introduce a revised platform featuring lighter frame components, updated geometry, redesigned engine mounting points and new suspension hardware. KTM has also revised the motorcycles’ ergonomics, exhaust systems and cooling arrangements.
The Factory Editions receive a range of premium components from established motocross equipment manufacturers. These include Brembo braking components, revised quickshifter, NEKEN handlebars, WP Pro Components triple clamps and start device, EXCEL wheels and revised spoke layouts, ODI lock-on grips and a Selle Dalla Valle seat cover.
What engine powers the 2027 KTM 250 SX-F Factory Edition?
The 2027 KTM 250 SX-F Factory Edition receives a completely redesigned four-stroke engine. The revised powerplant features an oval throttle body, oval intake ports and a top-feed injector, alongside a redesigned valve train.
The engine has a maximum rev limit of 14,500rpm, matching the engine speed used by KTM’s MXGP racing machinery. KTM has not disclosed an exact peak horsepower or torque figure for the redesigned 250cc engine.
How powerful is the 2027 KTM 450 SX-F Factory Edition?
The 2027 KTM 450 SX-F Factory Edition is powered by a 449.9cc, single-cylinder, four-stroke, liquid-cooled engine with a DOHC valve configuration and fuel injection. It produces a claimed 63.8 hp at 10,000rpm and 52 Nm of peak torque at 7,000rpm. The engine is paired with a six-speed transmission.
What chassis and suspension upgrades do the new KTM Factory Editions receive?
The 2027 KTM 250 SX-F Factory Edition and 450 SX-F Factory Edition share the same fundamental chassis and suspension upgrades. KTM has redesigned frames with revised geometry, stiffness parameters and steering head construction.
The engine mounting points have also been repositioned as part of the updated chassis architecture. KTM has worked on reducing frame weight and overall mass while improving agility, stability and feedback. Suspension duties are handled by revised WP XACT closed-cartridge spring forks and a new rear shock.
What electronic and mechanical updates are included?
Both new motocross models receive an updated Engine Management System with a new ECU capable of processing sensor information faster. The electronics package includes selectable engine maps, traction control and launch control, operated through a redesigned multifunction handlebar switch.
When will the 2027 KTM 250 SX-F and 450 SX-F Factory Editions be available?
KTM has confirmed that the 2027 250 SX-F Factory Edition and 450 SX-F Factory Edition will reach authorised dealerships in selected international markets from November 2026 onwards.
