125 SX 2022
KTM 125 SX 2022 for Sale at KTM Epping in Epping, VIC | Specifications and Review Information
THE STARTING GATE
The KTM 125 SX is the most compact and lightweight of the full-sized KTM motocross arsenal, delivering championship-winning performance to up-and-coming racers. Due to its confidence-inspiring performance, lightweight chassis and overall agility, the KTM 125 SX has become the most competitive 125 cc 2-Stroke engine in its class. For 2022, This 2-Stroke screamer is the ultimate entry point into the pro ranks and a sure-fire way to add to the trophy collection.
The 2022 KTM 125 SX undoubtedly boasts the most competitive and powerful engine in its class. With an outstanding power-to-weight ratio, low cost, and overall simplicity, it is clear that this 17.2 kilogram, 2-stroke mill will continue to have a successful future in KTM motorsports.
At the heart of the 125 cc engine is a cylinder with a 54 mm bore. It features a powervalve unit with a sophisticated mechanism designed for the lateral support exhaust ports. The exhaust port layout enhances engine performance, while the upper contour of the exhaust port is machined to ensure more accurate port timing. Together with the two-component cylinder head, this key to the KTM 125 SX's outstanding performance across the entire rev range.
The KTM 125 SX is fitted with a robust 6-speed transmission. The gear ratios, which featured improvements and reinforcements, were carried over from its predecessor. Another highlight of the 125 SX transmission is the "no-dirt" gear shifter. Similar to the footpeg design, it prevents the build-up of dirt and ensures the next gear is always available, no matter what the conditions.
Keeping things cool when the going gets heated, is a set of radiators ideally positioned for a lower center of gravity. By using computational fluid dynamics technology together with a clever coolant circuit routing, the innovative system ensures the optimum engine temperature for the highest performance, no matter what the conditions.
Their's more to it than 'braaaap!'. The exhaust plays a key role in packing that signature 2-stroke punch. When it comes to power delivery and performance, the exhaust is developed specifically for the KTM 125 SX and plays a key role packing a punch. In addition, its special shape provides slimmer ergonomics while still operating safely within the noise limits for racing.
The KTM 125 SX makes use of a pin-point accurate hydro-formed chromium-molybdenum frame. These are robot welded to ensure the highest levels of consistent quality, stiffness, and responsive handling. And when paired with the WP PRO COMPONENT suspension, provides excellent agility and high-speed stability. For 2022, all KTM SX frames are powder-coated in full-factory orange and come with standard frame protectors. The subframe is made from lightweight aluminum and provides a great feeling for the rider, as well as easy movement across the seat.
The full-size KTM SX machines make use of lightweight, CNC-machined hubs and high-end Excel rims, wrapped in the latest Dunlop Geomax-MX33 tires. The aluminum spoke nipples feature a design that conveniently reduces the frequency with which the spokes need to be tightened.
The KTM SX range relies on the best in the business when it comes to slowing down. High-tech Brembo brakes take charge of the front and rear, ensuring maximum rider feel, less brake fade, and high-quality build quality. Combined with lightweight wavey discs, this race-proven system provides the highest level of braking efficiency, providing unrivaled stopping power.
Feeding the high-revving machine beneath, a lightweight, 7-liter polyethylene fuel tank ensures an uninterrupted flow of fuel at all times. The shape of the fuel tank also aids in the overall, slim ergonomics of the bike, without compromising on fuel capacity.
The airbox on the KTM 125 SX ensures optimal flow dynamics, and together with its intake snorkels, leads to maximum power and quick throttle response. Despite the obvious performance advantages, the design also offers maximum protection against soiling of the air filter. The large Twin-Air air filter is mounted on a cleverly designed stiff cage that minimizes incorrect installation. As found on previous models, filter maintenance is quick and easy and does not require tools - a standard, original feature from KTM.
Wet multi-disc DS clutch, Brembo hydraulics
1-cylinder, 2-stroke engine
Weight (Without Fuel)
Tank Capacity (Approx.)
Front Brake Disic Diameter
Rear Brake Disic Diameter
5/8 x 1/4"
Central double-cradle-type 25CrMo4 steel
WP XACT-USD, Ø 48 mm
WP XACT Monoshock with linkage
Steering head angle
Suspension Travel (Front)
Suspension Travel (Rear)
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.
The consumption values stated refer to the roadworthy series condition of the vehicles at the time of factory delivery.