2026  KTM  50 SX FACTORY EDITION  - 42540M

2026 KTM 50 SX Factory Edition

FULL FACTORY FLAVOR

Racing creates emotion and fans, and this passion for competition and excellence can start at any age. The KTM 50 SX FACTORY EDITION is our nod to the future of the sport. Count on full READY TO RACE consideration with an advanced steel frame and an engine that won't disappoint. The bike boasts leading components such as DUNLOP Geomax MX53 tires, a FMF exhaust system, a new 35 mm WP XACT AER fork, a WP XACT monoshock, and a hydraulic Formula brake system. All this, along with key similarities with the full-sized motocross range, superior levels of quality, and revolutionary height adjustability included. Don't forget those astonishing looks for the full 'factory' treatment.

01. Before The Gate

ADJUSTABLITY

• The KTM 50 SX FACTORY EDITION is designed to grow with the little racer, by being height adjustable. Different options were built into the KTM 50 SX construction using scientific statistical data and mannequins. So, finding the right fit for your junior ripper is ultra easy, thanks to height adjustable suspension, handlebar position, subframe, and bodywork, taking the seat height from a low setting of 24.9 in (634 mm) to a taller setting of 26.8 in (682 mm).

IGNITION

• A digital ignition with improved processing power makes for a cleaner burn and smoother power delivery. Individual ignition timing across the entire rpm range, just like that found on the full-sized KTM SX range, adds a key advantage. The throttle cable assembly benefits from a new stabilization cap that extends the lifetime of the cable by reducing the risk of kinking and damage.

02. Start Strong

PERFORMANCE

• The KTM 50 SX FACTORY EDITION features a modern and compact engine using the latest 2-stroke technology. Using a 3-shaft design, the crankshaft is positioned near the center of gravity, which benefits mass centralization and creates the ideal intake angle into the reed valve for top-level performance. For 2026, the transmission shafts are new developments with wider dimensions and several components have been reinforced to enhance durability.

POWER-REDUCTION KITS

• For absolute beginners, the KTM POWERPARTS catalog offers a choice of two power-reduction kits. The first allows for an entry-level, moderate, and controllable power reduction to 4hp, with the second permitting for a more intermediate power kit unleashing 8hp for mid-level riding levels.

03. Calm Under Fire

FRAME

• The KTM 50 SX FACTORY EDITION boasts a high-strength chromium molybdenum steel frame design with forged connecting parts integrated into the frame. This together with carefully calculated parameters of longitudinal flex and torsional rigidity, allow tailormade stiffness and an unprecedented quality of the Mini frame could be achieved. The frame layout features a typical MX design without any cross tube behind the steering head. Like our full-size models, the rear shock mount is separated from the main upper frame tube. The frame also comes with frame protectors as standard.

AIRBOX AND FILTER

• The airbox features a conventional suction sleeve made from a hard-wearing polyamide instead of rubber and a Twin Air filter mounting system that features snap locks for easy and intuitive mounting. The Twin Air filter is also placed under the seat and is easily accessible without any tools by simply removing the seat. It also features improved dirt intrusion resistance, with no more dirt falling into the intake tract when changing the filter.

04. Hit The Big Stuff

SUSPENSION

• The latest in suspension technology: the KTM 50 SX FACTORY EDITION has an updated state-of-the-art, lightweight 35 mm USD WP XACT AER fork. With 205 mm of wheel travel, the new air unit in the left fork leg can also be adjusted easily using an air pump for rider preference, weight, or track conditions. The upgrade means better damping and control and is a step forward for the suspension performance. At the rear, fully-adjustable WP XACT monoshock boasts a mounting point on the frame making it more compact, providing the perfect balance and damping characteristics to match the fork.

BRAKES

• Featuring the same level of technology offered on the full-size KTM SX range, the KTM 50 SX FACTORY EDITION is fitted with hydraulic brake calipers and waved, state-of-the-art front and rear brake discs. This system ensures advanced braking feel and unmatched stopping performance in all conditions, specifically on wet or muddy tracks, with improved durability and brake pad longevity.

05. Maintaining Momentum

RADIATOR

• The KTM 50 SX FACTORY EDITION has state-of-the-art Panki radiators inspired by the full-size KTM SX range and features the same basic design with all the hardcore cooling properties. The KTM 50 SX FACTORY EDITION uses one large radiator with more capacity instead of two smaller separate ones. This concept allows for better integration of the radiator into the frame and the tank spoilers to channel air through the cooling fins efficiently.

HOUR METER

• Keep track of engine hours easily, with an hour meter mounted at the same position behind the front number plate - as on the full-size KTM SX models. This makes for easier reading and has a lower risk of dirt and water fowling up the display.