2027 KTM 450 SX-F 

THE TOP OF THE FOODCHAIN

Still the reference. AMA Supercross wins and titles. MXGP wins and titles and history. What's the next chapter? Write it. Beat the best and rule the rest with the only standard.

Before The Gate

LESS FOCUS ON THE TOOL, MORE FOCUS ON THE TRACK

Serviceability

The KTM SX and SX-F range is engineered and designed to provide riders with easy-to-access service parts, as well as suspension adjustability. This permits faster trackside and off-season maintenance, as well as simplifying motocross for novice riders without pit crews. For 2026, a new threaded radiator cap allows easier and faster opening with reduced force.

CLICK INTO ACTION

Easy Suspension Adjustment

As always, the suspension boasts an easy tool-free setup at both ends, ensuring you chase down the podium in total control. On the rear, a hand-adjustable dual compression option allows riders to adjust high- and low-speed settings in a matter of seconds. The forks on the front end are also easily modified thanks to hand-adjustable clickers on the bottom of the fork shoe and top cap.

BREATHE EASY

Airbox

Designed to provide maximum airflow, the air filter box is designed with precisely positioned inlet ducts aimed at preventing air deformation and maintaining filter protection. The Twin Air filter and air filter support design feature a simple fail-proof mounting system for safe and accurate filter installation, ensuring the air filter is easily accessed, without tools, by removing the left side panel, for easy track-side maintenance. A vented air filter box cover is also included for all SX and SX-F models in the by-pack.

Start Strong

TOTAL TRACTION

Selectable Maps + TC

The map select switch on the KTM KTM SX-F models features a simple design, allowing for easier functionality in switching between 2 engine maps. Map 1 provides a more linear power curve. while map 2 punches all-out with aggressive throttle and explosive power. Luckily, traction control is easy toggled to an on or off position from the same switch, ensuring maximum traction and a distinct advantage in wet or muddy conditions.

UNMATCHED PERFORMANCE

More Usable Power

When the gate drops you need to be the first to off the line in a bid to rule (and make) the roost. The KTM 450 SX-F boasts one of the strongest and most versatile 4-stroke powerplants in the paddock, with its SOHC engine proving to be the perfect example of advanced engineering. With a peak power output, and an overall engine weight of only 59 lb (26.8 kg), you'll leave the competition with more than a little mud on the face.

DROP THE CLUTCH

Launch Control & Quickshifter

Launch control, ENGAGED! Designed for the holeshot, the KTM SX-F range comes standard with launch control and Quickshifter function, allowing for fast upshifts without using the clutch. Launch control is easily engaged by pressing the traction control and Quickshifter buttons simultaneously and works by limiting the amount of power to the rear wheel, improving traction, and preventing loss of control under hard acceleration. Meanwhile, the Quickshifter function means you can bang through from 2nd to 5th gear with your focus solely on the first corner.

Calm Under Fire

UNMATCHED PERFORMANCE

Performance

The KTM SX-F engine is tilted 2° backward, this means greatly improved mass centralization and reduced overall weight, benefiting handling and anti-squat behavior. A silencer offers an improved response in combination with the mapping switch and provides a slightly quieter exhaust note.

SLEEKER FOR YOU TO SCRUB CLEANER

Absolute Control

Get ready for a full-on berm assault. The KTM SX and SX-F machines feature revised frame updates developed with input from KTM Factory Racing. For starters, the area around the rear shock mount is streamlined, with optimized engine mounts and cut-outs for improved chassis flex. The front area of the frame features optimized wall thickness with updated engine mounts.

FLUID RIDER MOTION

Ergonomics

Tank shrouds using bi-compound plastics channel air towards the radiators more efficiently, while a concise fuel tank roll, makes for a tighter, more secure fitment, reducing the chance of frame scrubbing and dramatically improving durability. All this works alongside the specially-developed rider triangle, to provide unmatched knee contact and gripping surfaces - especially when standing on the pegs.

Hit The Big Stuff

WELCOME TO NEXT LEVEL MOTO

Connectivity Unit Offroad

Available as a PowerPart on the KTM SX-F range, the Connectivity Unit Offroad - or CUO for short - offers a wide range of functionalities and adjustability options via the KTMconnect app. The CUO gives you a new insight into your riding, allows you to alter your engine behavior, and even provides you with optimized suspension settings based on individual preferences and riding conditions. Welcome to the next level moto.

UNFLAPPABLE FRONT END

WP XACT Fork

Let's get the technical parts out of the way first; the 48 mm WP XACT AER forks fitted to the KTM SX and SX-F line-up features a capsulated air spring and pressurized oil chamber for progressive and consistent damping, while oil and air bypasses reduce pressure peaks. In combination with the mid-valve damping system, all this provides exceptional feedback and rider comfort. The fork also has settings which not only compliment the frame and rear linkage, but ensures stellar performance at all levels. Speaking of settings, these are easily adjusted via a single air pressure pre-load valve, as well as easy-access click adjusters for compression and rebound. Additionally, the WP air pump needed to adjust the fork's air pressure is provided as standard in the buy-pack.

TRACK SMOOTHER

WP XACT SHOCK

Keeping things in check at the rear, the WP XACT rear shock for uses settings directly from the KTM Factory Racing Teams. The frame and shock geometry mean more ground clearance at the linkage, making it less susceptible to bottoming out. Small diameter linkage bolts save weight, while the linkage seals refine rear shock response and advanced damping characteristics.

RACING ON RAILS

Stability

The KTM Motocross range has a special rear brake pedal adding additional stiffness, bending resistance and braking feel to the overall package. At the other end, a forged steering head connection and CNC-milled triple clamps, make for the perfect alignment of the fork tubes. This precise geometry of the fork clamps ensures highly responsive and smooth fork action - not to mention unwavering stability when charging across ruts and onto the podium.

DIGGING THE DIRT

Tires

Getting power hooked into the dirt is a tough job. However, hours of research and testing have led the KTM Motocross range to the Dunlop GEOMAX MX34. Providing unmatched stability and control at the highest level, the rubber features a rigid carcass and rubber compound that improves damping and absorption, maintaining performance up to 30% longer than previous models. Progressive Cornering Block Technology also improves grip in the berms, while the rear pattern has a tall and wide center block for desirable traction and control everywhere else. Lastly, this unique block arrangement works to dispel mud buildup, ensuring traction in even the muddiest of track conditions.

Maintaining Momentum

UNOBTRUSIVE IMPACT

Energy absorption

Besides the expertly crafted, hydro-formed, laser-cut, and robot-welded frame being engineered to provide exceptional rider feedback and straight-line stability, the chassis consists of specifically calculated parameters of longitudinal and torsional flex. This means the frame acts as a "shock absorber" of sorts, making for a less harsh ride, resulting in less rider fatigue over many hard laps.

NOTHING TO HOLD YOU BACK

Ground clearance

The shock absorber geometry on the KTM SX and SX-F machines gives decent ground clearance for the linkage, with the topology-optimized die-cast footpegs being less susceptible to hooking on deep ruts, and take-offs when scrubbing.

PRECISE, LAP AFTER LAP

Consistency

Count on a durable chain guide and chain guard and minimize the chances of hooking on external objects - especially in extremely muddy terrain while reducing dirt build-up around the swingarm and rear sprocket. For 2027 we've also modified the fixing points and routing of the wiring harness so it's less prone to wear and damage.

Harnessing Gravity

Mass Centralization

With a strong focus on mass centralization, KTM SX and KTM SX-F engines are designed to concentrate rotating mass at the core, working in perfect harmony with the chassis. The result is lighter, more agile handling that runs rings around the competition.