WIDE OPEN TRACK ATTACK
With the agility of a 125 and a healthy dose of extra power, the KTM 150 SX is a lively package ready to take on the 250 cc 4-strokes. From within its dynamic lightweight chassis, the compact engine produces class-leading torque and power. Everything about this motorcycle screams high-performance fun and it goes into battle as the ultimate on-track competitor.
 
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 2020, small, but important refinements have been made, resulting in improved power delivery and reliability and through its melodic high-RPM screams, KTM150 SX continues to deliver thrilling high-performance harmonics.
 
CYLINDER
At the heart of the 150cc engine is a 58 mm bore cylinder. It features an innovative power valve unit with a sophisticated mechanism designed for the lateral support exhaust ports. The exhaust port layout enhances engine performance, while the precise machining of the upper contour of the exhaust port ensures accurate port timing. The two component cylinder head works in complete harmony with the cylinder to deliver outstanding performance across the entire rev range.
 
CRANKCASES AND ENGINE COVERS
The lightweight engine cases are manufactured using a high pressure die-cast production process, keeping wall thickness to a minimum while retaining strength and durability. The design allows for a high crankshaft position which is located near to the center of gravity, resulting in optimal mass centralization and easier rideability. The engine body is extremely compact, which contributes significantly to the low engine weight. Additionally for 2020, the kickstart intermediate gear has been reworked for improved reliability.
 
TRANSMISSION
The KTM 150 SX is fitted with a robust 6-speed transmission. The gear ratios, which featured improvements and reinforcements, were carried over from the predecessor. The gearbox features a new drive shaft which uses a screw for pinion fixation and diaphragm spring instead of a circlip, ensuring safer pinion fixation. 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.
 
CHASSIS
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 2020, 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
When it comes to attacking the track, chasing faster times with every lap, there is no better weapon than the KTM 150 SX. Its performance-inspired design allows the rider to shift his weight quickly and easily, working in perfect harmony with the motorcycle. KTM has focused extensively on creating bodywork and ergonomics that are shaped for high-level performance, ensuring a riding position that offers the best control. A rider's main interaction with the bike is through the bodywork, footpegs and handlebars. No compromises were made in these important areas and only the best quality products and designs can be seen on all SX models. KTM produces incredibly fast motorcycles and every effort goes into making sure the rider has the ability to confidently control it.