MotorcyclesMotocross

2022 KTM 125 SX

In Stock! $12,254 Ride Away

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.

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Overview

 MOTORCYCLES KTM MOTOCROSS MY22 377754_125SXMY2290-right

THE STARTING GATE

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.

ENGINE & EXHAUST

KTM 2-strokes have been tearing up MX tracks for decades and are undoubtedly the fastest on the track today. Thanks to years of ongoing development, these engines are the benchmark in performance and technology, with the perfect combination of power, weight and control. For 2022, small, but important refinements have been made, resulting in improved power delivery and reliability and through its melodic high-RPM screams, KTM125 SX continues to deliver thrilling high-performance harmonics.

CHASSIS

To cater for the highly energized riding style of a 125cc 2-stroke rider, KTM developed a chassis that delivers on their demanding expectations. The lightweight, high-tech steel frame is designed to respond instantly to rider input and provide accurate rider feedback. The flex characteristics help the bike to soak up those big hits while also delivering excellent agility and high-speed stability. For 2022, the suspension features improved damping characteristics. The reworked settings offer a slightly softer, more comfortable feel that, together with the frame, allows the rider to be 100% in charge of the ride. The KTM 150 SX is just made to be ridden aggressively and features a chassis that delivers on the rider's demanding expectations. The lightweight, high-tech steel frame is designed to respond instantly to rider input and provide accurate rider feedback. The flex characteristics help the bike to soak up those big hits while also delivering excellent agility and high-speed stability. For 2022, the suspension features improved damping characteristics. The reworked settings offer a slightly softer, more comfortable feel that, together with the frame, allows the rider to be 100% in charge of the ride.

ERGONOMICS & COMFORT

Momentum is crucial when laying down fast laps on a 125cc. The ability to shift your weight quickly and easily to move in harmony with the motorcycle is key to maximizing flow. KTM focused extensively on the optimal ergonomics for high-level performance, ensuring a riding position that offers the best control and, with the option of several handlebar positions, can be adjusted to suit every rider and condition. The way a rider interacts with the bodywork, seat, footpegs and handlebars achieves balance and control. For this reason, no compromises were made in these important areas and only the best quality products and designs were used. Sitting on the 2022 KTM 125 SX gives the rider a definite sense of control and this is immediately confirmed the moment he hits the track.

SOFTWARE & ELECTRONICS

Absolute performance purity is the name of the game when it comes to the KTM 125 SX. Undiluted 2-stroke simplicity with an hour meter to keep a check on how long you've been shredding and an optional rev counter to assist with perfect setup.

 MOTORCYCLES KTM MOTOCROSS MY22 377756_125SXMY22Front-right

Technical Specifications

Engine

 MOTORCYCLES KTM MOTOCROSS MY20 2020_150SX MODEL_MY19-20_125-150SX_ENGINE1_KISKA

Power Progression

The KTM 125 SX engine is undoubtedly once again 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 2-strokes will continue to have a successful future at KTM. The compact and durable 17.2 kg engine was developed using the latest KTM engineering know-how, resulting in broad power across the rev range. Its easy rideability and outstanding performance are benefits that equate to faster lap times and better results.


Displacement
124.8 cm³
Design
1-cylinder, 2-stroke engine
Bore
54 mm
Stroke
54.5 mm
Starter
Kickstarter
Transmission
6-speed

Cooling

Highly Effective Cooling

Maintaining the optimal engine temperature is crucial to ensuring consistent horsepower throughout the ride. The KTM 125 SX features radiators which are mounted 12 mm lower than the predecessors. This lowers the center of gravity and matches the design of the new shrouds perfectly in order to achieve perfect ergonomics. By using CFD technology (computational fluid dynamics) together with a clever coolant circuit routing, the innovative system ensures the optimum engine temperature for the highest performance, no matter what the conditions. The radiators also feature special protectors that serve not only as protection from flying rocks and debris but also as a brace that disperses energy around the radiators in the event of an impact.

Exhaust

 MOTORCYCLES KTM MOTOCROSS MY20 2020_150SX MODEL_MY19-20_125-150SX_EXHAUST_KISKA

For Sound of Power

When it comes to power delivery and performance, the exhaust plays a key role and packs a punch that is hard to beat. In addition, its narrow shape provides slimmer ergonomics while still operating safely within the noise limits for racing.

Chassis

Control at the Core 

The frame and subframe on the KTM 125 SX caters for the aggressive riding styles associated with 125 cc racing. The frame itself is professionally crafted from hydroformed chromium molybdenum steel tubes that are robot welded, ensuring the highest levels of consistent quality. The stiffness has been precisely tailored for the most dynamic handling, and works in perfect harmony with the suspension to provide nimble agility without losing high-speed stability. The frame also features "no dirt" footpegs, which have a simple but effective self-cleaning system that ensures the footpegs return to their original position, providing complete control in all conditions. All SX frames feature the same highly durable powder coating as the KTM Factory machines and come with standard frame protectors. The subframe is made from lightweight aluminum, providing rear fender stability and strong support for the rider at little extra weight.

Rear Suspension
WP Xact Monoshock with Linkage
Suspension Travel
310mm (F) 300mm (R)
Front Brake
Disc Brake
Rear Brake
Disc Brake

Wheels

KTM uses lightweight, CNC-machined hubs and high-end Excel rims on all SX models, guaranteeing maximum stability and minimum weight. The aluminum spoke nipples feature a design that conveniently reduces the frequency with which the spokes need to be tightened. The wheels are fitted with the latest DUNLOP Geomax MX 3S tires, delivering maximum grip and stability, effectively transferring all the power to the ground.

Brakes

Highly Effective Braking

High-tech BREMBO brakes have always been standard equipment on all KTM motocross bikes. Combined with lightweight wave discs, the renowned system provides the highest level of braking efficiency, enabling you to out-brake the competition.

We offer specialised and professional servicing

Our factory trained technicians understand how valuable your time is and ensure top-level maintenance and repairs for your valued vehicle, along with a variety of specialised work.

Learn about our Workshop
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