KTM 450 SX-F Factory Edition

The 2027 KTM 450 SX-F Factory Edition is not simply a motocross machine — it's a statement. Developed alongside Red Bull KTM Factory Racing, it brings an all-new chassis, suspension package, and engine platform straight from the paddock to the production line. Now it's your turn. With this bike you don’t follow the benchmark — you set it.

At its heart sits a 449.9 cc single‐cylinder, 4-stroke engine featuring a completely redesigned cylinder head and an innovative top-feed fuel injection system. The compact powerplant reaches peak output at 10,000 rpm and is positioned 2.3 mm higher in the chassis to drastically centralize mass, sharpen handling, and reduce anti-squat under load. Fuel is delivered seamlessly via an updated 44 mm Keihin throttle body with a repositioned injector, paired with a 5-speed transmission, a redesigned shift drum, and a wet multi-disc DDS clutch with Brembo hydraulics — precision built for the holeshot.

The chassis is pure race-intent: an all-new lighter central double-cradle frame with revised stiffness characteristics, paired with a new die-cast aluminum swingarm and a 1.23 kg aluminum subframe—the lightest KTM has ever produced. The carefully tuned geometry features an updated chain tensioner allowing for a 5 mm extended wheelbase option, providing straight-line stability matched with razor-sharp corner entry.

Suspension marks a major evolution: upfront sits the new 48 mm WP XACT Closed Cartridge Spring Fork, replacing the previous air system to provide consistent damping and a planted front-wheel connection. In the rear, an updated WP XACT monoshock features a new high-speed compression clicker and revised linkage setup for faster, more precise tuning.

Brakes come from Brembo: 260 mm rotor up front, 220 mm rotor at the rear for confident stops when the laps are stacking up. The model also features a specific exhaust with three resonator chambers to meet the latest 109 dB FIM and AMA regulations. The weight (without fuel) of the 2027 Factory Edition is listed at 105.6 kg — making it incredibly agile on its feet.

Electronics have officially taken over the paddock. A new Engine Management System processes data faster than ever, offering selectable gear-dependent maps, traction control, launch control, new knock-control technology, and an updated Quickshifter strategy for seamless upshifts — features once reserved for the top level, now standard race hardware.

Why it matters

• Race DNA: Developed directly with Red Bull KTM Factory Racing, this machine delivers the closest production connection yet to their championship-winning bikes.

• Mass centralization & agile handling: The 2.3 mm engine lift, lighter frame, and new swingarm combine to give a planted, razor‐sharp feel.

• Top-tier components: From WP Closed Cartridge spring forks to Brembo brakes and top-feed fuel injection, you get pro-level kit as standard.

• Flexibility for tuning: Easily accessible suspension clickers and extensive electronic adjustability let you dial in the bike for your unique riding style.

• Broader power: The new top-feed system and redesigned cylinder head deliver stronger low-rpm torque and more usable power wherever the gate drops.

Your next chapter

You’ve got the hardware. Now bring your ambition. Whether you're lining up at your local club race or aiming for the podium at national level — this bike is the platform. Own it. Push it. Make history.

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Specification snapshot (typical for Factory Edition):