2026 KTM 50 SX FACTORY EDITION

2026 KTM 50 SX FACTORY EDITION for Sale at Ultimate KTM Ipswich in West Ipswich, QLD | Review Specifications, Features & Information

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 reworked 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.

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 634mm to a taller setting of 682mm.

Ignition

Fitted with a digital ignition the KTM 50 SX FACTORY EDITION, has improved processing power and ignition curve, making 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 roster, adds a vital advantage to the digital ignition. 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.

Carburetor

A proven Dell'Orto type PHBG 19 BS carburetor takes prime position in producing the goods in the KTM 50 SX FACTORY EDITION, with settings that work perfectly in harmony with the engine, exhaust, and air intake design. And specific to the KTM 50 SX FACTORY EDITION, the reed valve case has a "double stage" concept, with an additional set of membrane flaps for even better gas atomization.

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. An independent cylinder blank allows for a complete cylinder design, with increased power.

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.

Spark Plug

There's no more worrying about breaking the plug, thanks to the KTM 50 SX FACTORY EDITION featuring a Iridium-type spark plug from BRISK with a longer thread and a factory orange sparkplug connector. Also, thanks to this innovation, the part number is printed on the spark plugs for easy reading.

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.

Ergonomics

Mimicking the full-size KTM SX range, the KTM 50 SX FACTORY EDITION features the same advancements found in the larger KTM SX models. Slimmer, sleeker, and better suited to standing on the pegs, the side panels now work much better with young riders' boots, allowing a proper squeezing of the bike when standing up with the knees. The front number plate incorporates plastic flaps to protect the lower triple clamps from roost. Speaking of triple clamps, the model spectrum now has an improved fixing mechanism which hikes the lifespan of the steering head bearings thanks to the extra block from dirt and water. The wrench size is also smaller and more practical. The tank spoiler features a bicomponent technology with the KTM-specific texture on the upper part. Side number plates are kept as close to the frame as possible, with the general seat line sitting slightly flatter.

Handlebars & Grips

Hold on tight! The high-quality, tapered, black handlebar is made of lightweight aluminum alloy and ensures top stability, vibration damping, and control. The bend and profile is designed specifically to meet the needs of young riders, with a factory-specific grey ODI grip on the left, and a vulcanized ODI grip on the right-side throttle assembly, adding to the overall quality. A crash pad on the handlebar protects the rider from any rough contact or impact with the bars.

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.

Wheels & Tires

Rolling off the race rig and into the pit lane, the KTM 50 SX FACTORY EDITION uses lightweight, black anodized, aluminum rims like the full-size KTM SX range. These provide the highest levels of strength and reliability; DUNLOP Geomax MX53 tires deliver outstanding performance on any terrain and exceptional straight-line stability.

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.

Radiator

The KTM 50 SX FACTORY EDITION has state-of-the-art Pankl 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.

Graphics

The KTM 50 SX FACTORY EDITION shines with KTM Red Bull Factory Racing-inspired colors, and much of the bodywork is finished in orange with blue accents - like those found on the full-size KTM Factory Editions. Of course, sponsor logos, gray ODI lock-on grips, and an orange factory seat rounds off the package, making this 50cc weapon look as fast as it gets off the line.

Exhaust

A complete FMF exhaust system consists of the nickel-plated FMF fatty pipe and the FMF Powercore 2 silencer, with a signature 'Braaaaap!'. A black anodized, CNC-machined exhaust flange takes care of the perfect integration of the FMF exhaust system. Modifications include a new flange gasket for better durability and the exhaust valve ventilation has been redesigned. It is more 'bulletproof' thanks to extra efficient and locally sourced manufacturing at KTM HQ.

Engine

Design

1-cylinder, 2-stroke engine
Displacement

49.9 cm³
Transmission

Single-speed automatic
EMS

Dellâ€™Orto PHBG 19 BS
Engine oil

ATF â€œMotorex Dexron 3â€
Clutch primary drive teeth

61
Primary drive

33:61
Clutch

Centrifugal clutch (adjustable)
Engine cylinder

Single cylinder
Engine stroke

2-Stroke

Chassis

Frame design

Central-tube frame with double-cradle
Front brake

Disc brake
Rear brake

Disc brake
Rear subframe design

Steel / Polyamide Glass Fiber
Chain

415, Non-sealed

Suspension

Front suspension

XACT 35 WP Upside-Down fork, Ã˜ 35 mm
Rear suspension

XACT WP mono shock
Suspension travel (front)

200.6 mm
Suspension travel (rear)

190.5 mm
Front suspension adjustment

Compression and rebound adjustable
Rear suspension setting

Compression and rebound adjustable

Dimensions

Seat height

653 mm
Ground clearance

233 mm
Tank capacity (approx.)

2.3 l

The illustrated vehicles may vary in selected details from the production models and some illustrations feature optional equipment available at additional cost. All information concerning the scope of supply, appearance, services, dimensions and weights is non-binding and specified with the proviso that errors, for instance in printing, setting and/or typing, may occur; such information is subject to change without notice. Please note that model specifications may vary from country to country. In the case of coated surfaces, there may be color differences due to the usual process fluctuations. The consumption values stated refer to the roadworthy series condition of the vehicles at the time of factory delivery.

2026 KTM 50 SX FACTORY EDITION