Developed alongside Red Bull KTM Factory Racing and shaped by years of testing at the highest level, it introduces an all-new chassis, suspension package, engine platform, ergonomics concept, and electronics architecture. Equipped with an extensive collection of Factory Racing components and race-proven technology, it delivers the closest production connection yet to KTM's championship-winning motocross bikes. The result is more power, more control, and more confidence to push harder, lap after lap.
Peak output is reached at 10,000 rpm, while the new-generation engine delivers increased performance with a strong focus on rideability. Rather than simply creating more power, development focused on making that performance more manageable, flexible, and easier to use. A redesigned cylinder head, revised intake concept, top-feed injection system and updated crankshaft assembly work together to deliver stronger low-rpm torque, improved throttle response and greater rideability across the entire rev range. Positioned 2.3 mm higher in the chassis for improved mass centralization, the engine also contributes to a more balanced, responsive and confidence-inspiring riding experience.
BROADER POWER. STRONGER DRIVE.
FASTER, BETTER
Built to perform at the highest level, the engine benefits from a revised intake system, optimized fuel delivery and an entirely new exhaust concept. A model-specific exhaust system featuring three resonator chambers broadens the power delivery while helping comply with the latest 109 dB FIM and AMA regulations. Combined with improved cooling performance and refined combustion characteristics, the result is stronger acceleration, improved traction and more usable power wherever the gate drops.
FASTER THINKING. SMOOTHER SHIFTING.
SLICKER, SMOOTHER
A new Engine Management System processes information faster and more precisely than ever before, resulting in improved ignition control, fueling and gear-dependent mapping. New knock-control technology helps protect the engine while enabling more advanced performance mapping across a wider range of riding conditions. A redesigned shift drum reduces shift effort, while the updated Quickshifter strategy delivers smoother, faster upshifts. The revised second-to-third gear ratio further improves corner exits and reduces the need for downshifts in slower sections.
FACTORY RACING TECHNOLOGY. PRODUCTION-BIKE PERFORMANCE.
TOP-FEED ADVANTAGE
A completely redesigned airbox improves airflow and filtration while providing increased protection from dust, mud and water. A key innovation is the new top-feed fuel injection system, developed from experience gained at the highest level of motocross racing. The updated 44 mm Keihin throttle body features a repositioned injector for improved fuel atomization and throttle response, while the upstream top-feed injector supports efficient mixture preparation when the engine is working hardest. Combined with the new airbox layout, the system helps deliver consistent, controllable power across changing track and riding conditions.
MORE POWER. MORE CONTROL.
THE BEST, NOW BETTER
Peak output is reached at 10,000 rpm, while the new-generation engine delivers increased performance with a strong focus on rideability. Rather than simply creating more power, development focused on making that performance more manageable, flexible, and easier to use. A redesigned cylinder head, revised intake concept, top-feed injection system and updated crankshaft assembly work together to deliver stronger low-rpm torque, improved throttle response and greater rideability across the entire rev range. Positioned 2.3 mm higher in the chassis for improved mass centralization, the engine also contributes to a more balanced, responsive and confidence-inspiring riding experience.
BROADER POWER. STRONGER DRIVE.
FASTER, BETTER
Built to perform at the highest level, the engine benefits from a revised intake system, optimized fuel delivery and an entirely new exhaust concept. A model-specific exhaust system featuring three resonator chambers broadens the power delivery while helping comply with the latest 109 dB FIM and AMA regulations. Combined with improved cooling performance and refined combustion characteristics, the result is stronger acceleration, improved traction and more usable power wherever the gate drops.
FASTER THINKING. SMOOTHER SHIFTING.
SLICKER, SMOOTHER
A new Engine Management System processes information faster and more precisely than ever before, resulting in improved ignition control, fueling and gear-dependent mapping. New knock-control technology helps protect the engine while enabling more advanced performance mapping across a wider range of riding conditions. A redesigned shift drum reduces shift effort, while the updated Quickshifter strategy delivers smoother, faster upshifts. The revised second-to-third gear ratio further improves corner exits and reduces the need for downshifts in slower sections.
FACTORY RACING TECHNOLOGY. PRODUCTION-BIKE PERFORMANCE.
TOP-FEED ADVANTAGE
A completely redesigned airbox improves airflow and filtration while providing increased protection from dust, mud and water. A key innovation is the new top-feed fuel injection system, developed from experience gained at the highest level of motocross racing. The updated 44 mm Keihin throttle body features a repositioned injector for improved fuel atomization and throttle response, while the upstream top-feed injector supports efficient mixture preparation when the engine is working hardest. Combined with the new airbox layout, the system helps deliver consistent, controllable power across changing track and riding conditions.
02. CHASSIS AND HANDLING
SHARPER IN THE TURNS. STABLE AT SPEED.
ACUTE FEEL
The all-new chassis has been developed to deliver sharper handling, improved stability and greater rider confidence. A lighter frame, revised stiffness characteristics and updated engine mounts create a more precise feel when attacking corners while maintaining the straight-line stability KTM riders expect at speed. Positioned 2.3 mm higher in the frame, the engine also contributes to improved mass centralization and a more balanced handling character. The result is a bike that feels more agile, predictable and responsive than ever before.
LESS WEIGHT. MORE PRECISION.
LIGHTER. SHARPER.
A completely redesigned 1.23 kg aluminum subframe, the lightest KTM has ever produced, and a new die-cast aluminum swingarm contribute to reduced weight and improved handling precision. The swingarm has been optimized to complement the new chassis flex characteristics, while the updated chain tensioner allows the wheelbase to be extended by 5 mm. Together, these changes create a setup that feels planted and predictable, with greater flexibility to adapt to different tracks and rider preferences.
MOVE FREELY. STAY CONNECTED.
GRASP THE GAS
The new-generation bodywork and rider triangle are designed to improve control in every riding situation. A slimmer profile, improved contact areas and revised ergonomics help riders move freely across the motorcycle while maintaining maximum connection to the machine. New NEKEN handlebars and redesigned CNC-machined triple clamps with an adjustable 22 mm to 24 mm offset complete the package for improved feedback and faster direction changes.
PLANTED FEEL. PREDICTABLE PERFORMANCE.
FLOAT AND STING
One of the biggest changes for the new generation is the introduction of the 48 mm WP XACT Closed Cartridge Spring Fork. Developed through extensive testing from amateur to world championship level, the new setup was chosen for its consistent damping, improved front-wheel connection and predictable performance across changing track conditions. Both the fork and shock offer easily accessible adjustment, while the updated rear shock features a new high-speed compression clicker and revised linkage setup for faster, more precise tuning.
SHARPER IN THE TURNS. STABLE AT SPEED.
ACUTE FEEL
The all-new chassis has been developed to deliver sharper handling, improved stability and greater rider confidence. A lighter frame, revised stiffness characteristics and updated engine mounts create a more precise feel when attacking corners while maintaining the straight-line stability KTM riders expect at speed. Positioned 2.3 mm higher in the frame, the engine also contributes to improved mass centralization and a more balanced handling character. The result is a bike that feels more agile, predictable and responsive than ever before.
LESS WEIGHT. MORE PRECISION.
LIGHTER. SHARPER.
A completely redesigned 1.23 kg aluminum subframe, the lightest KTM has ever produced, and a new die-cast aluminum swingarm contribute to reduced weight and improved handling precision. The swingarm has been optimized to complement the new chassis flex characteristics, while the updated chain tensioner allows the wheelbase to be extended by 5 mm. Together, these changes create a setup that feels planted and predictable, with greater flexibility to adapt to different tracks and rider preferences.
MOVE FREELY. STAY CONNECTED.
GRASP THE GAS
The new-generation bodywork and rider triangle are designed to improve control in every riding situation. A slimmer profile, improved contact areas and revised ergonomics help riders move freely across the motorcycle while maintaining maximum connection to the machine. New NEKEN handlebars and redesigned CNC-machined triple clamps with an adjustable 22 mm to 24 mm offset complete the package for improved feedback and faster direction changes.
PLANTED FEEL. PREDICTABLE PERFORMANCE.
FLOAT AND STING
One of the biggest changes for the new generation is the introduction of the 48 mm WP XACT Closed Cartridge Spring Fork. Developed through extensive testing from amateur to world championship level, the new setup was chosen for its consistent damping, improved front-wheel connection and predictable performance across changing track conditions. Both the fork and shock offer easily accessible adjustment, while the updated rear shock features a new high-speed compression clicker and revised linkage setup for faster, more precise tuning.
03. HARDWARE & RACEWARE
RACE PREP MADE QUICKER AND EASIER.
ON YOUR MARKS
Every detail has been designed with racing and serviceability in mind. Clearly marked adjustment points, simplified maintenance procedures and improved component accessibility make preparation between motos faster and more intuitive. Updated fork guards feature a revised mounting design to help prevent twisting and contact with the fork seals, while integrated markings support precise setup of the Factory start device. It is practical, race-focused attention to detail that makes a difference before, during and after every moto.
CONTROLLED POWER. PRECISE BRAKING.
FOR WHEN YOU NEED TO STOP
Premium Brembo braking components continue to deliver exceptional stopping power and control. Updated rear brake pads provide a smoother, more controllable initial response and reduce the tendency for the rear wheel to lock at the start of braking. The revised rear brake lever features an adjustable tip, allowing its position to be moved 5 mm forward or backward to suit different boot sizes and rider preferences.
RACE PREP MADE QUICKER AND EASIER.
ON YOUR MARKS
Every detail has been designed with racing and serviceability in mind. Clearly marked adjustment points, simplified maintenance procedures and improved component accessibility make preparation between motos faster and more intuitive. Updated fork guards feature a revised mounting design to help prevent twisting and contact with the fork seals, while integrated markings support precise setup of the Factory start device. It is practical, race-focused attention to detail that makes a difference before, during and after every moto.
CONTROLLED POWER. PRECISE BRAKING.
FOR WHEN YOU NEED TO STOP
Premium Brembo braking components continue to deliver exceptional stopping power and control. Updated rear brake pads provide a smoother, more controllable initial response and reduce the tendency for the rear wheel to lock at the start of braking. The revised rear brake lever features an adjustable tip, allowing its position to be moved 5 mm forward or backward to suit different boot sizes and rider preferences.
04. BODYWORK & GRAPHICS
FACTORY COMPONENTS. FITTED AS STANDARD.
DESIGNED FOR RACING
Factory-level components underline the race-ready intent. Straight from the showroom floor, the specification includes Factory Racing triple clamps, a Factory Racing wheel set featuring EXCEL Takasago rims and orange-anodized CNC-machined hubs, a Hinson outer clutch cover, Factory Racing seat with an exclusive SDV seat cover, Factory Racing frame protection set, NEKEN handlebar, ODI lock-on grips, factory start device, floating front wave brake disc, front brake disc guard, orange rear sprocket, golden racing chain and a durable skid plate. Developed to deliver the closest possible connection to Red Bull KTM Factory Racing machinery, every component serves a purpose, combining performance, durability, protection and race-ready functionality in one complete package.
FACTORY RACING LOOKS. UNMISTAKABLE KTM ATTITUDE.
STYLE KING
Rivals might only enjoy the best view while in the paddock or at the start gate. The Red Bull KTM Factory Racing graphics leave no doubt about its intentions, while the orange frame, Factory Racing components and exclusive detailing reinforce its position as the closest visual and technical connection to KTM's championship-winning race machines.
FACTORY COMPONENTS. FITTED AS STANDARD.
DESIGNED FOR RACING
Factory-level components underline the race-ready intent. Straight from the showroom floor, the specification includes Factory Racing triple clamps, a Factory Racing wheel set featuring EXCEL Takasago rims and orange-anodized CNC-machined hubs, a Hinson outer clutch cover, Factory Racing seat with an exclusive SDV seat cover, Factory Racing frame protection set, NEKEN handlebar, ODI lock-on grips, factory start device, floating front wave brake disc, front brake disc guard, orange rear sprocket, golden racing chain and a durable skid plate. Developed to deliver the closest possible connection to Red Bull KTM Factory Racing machinery, every component serves a purpose, combining performance, durability, protection and race-ready functionality in one complete package.
FACTORY RACING LOOKS. UNMISTAKABLE KTM ATTITUDE.
STYLE KING
Rivals might only enjoy the best view while in the paddock or at the start gate. The Red Bull KTM Factory Racing graphics leave no doubt about its intentions, while the orange frame, Factory Racing components and exclusive detailing reinforce its position as the closest visual and technical connection to KTM's championship-winning race machines.
05. 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.
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.
Technical Details
Design1-cylinder, 4-stroke engine
Displacement449.9 cm³
Transmission5-speed
Weight (without fuel)105.6 kg
Front suspensionWP XACT-USD Closed Catridge Spring Fork , Ø 48 mm
