KTM launches 2019 MX models!
After the enduro models, KTM now also presents its 2019 motocross models! Since the Austrian manufacturer has taken over the leadership in motocross in Europe and the US, the presentation of the new orange bikes is always a major event.
Where the Japanese used to rule the roost, KTM has really taken over. KTM not only dominates the World Championship in MX2, the manufacturer from Mattighofen also sets the tone in the MXGP with riders such as Jeffrey Herlings and Tony Cairoli. Moreover, KTM has also broken through in America in recent seasons, thanks to the Supercross and Motocross successes of Ryan Dungey.
Anyone who watches a Dutch or Belgian motocross race will also notice that the orange of the KTMs is the predominant color behind the starting gate. And then we have only talked about the adult classes, because in the youth cross the Austrians completely dominate. KTM, together with sister brand Husqvarna, has the most complete line-up of dirt bikes.
Broadly speaking, you can divide the KTM range into three sub-ranges: the so-called junior cross models, the two-stroke machines and the four-stroke machines. The range includes a total of nine different models, of which the main group – six – consists of two-stroke machines.
Junior models
KTM's junior range consists of the 50 SX, the 65 SX and the 85 SX. All junior models are powered by two-stroke engines. As has been customary in youth cross country for years, the latest model comes in two different versions: one with small wheels (17 inches at the front, 14 inches at the back) and one with large wheels (19 inches at the front and 16 inches at the rear).
The 50 SX is the only model equipped with an automatic transmission. Logical, because this is an initiation model. However, that doesn't mean the 50 SX doesn't look slick! With components such as a water-cooled engine, an upside-down front fork and disc brakes, the smallest KTM crosser is on par with its bigger brothers!
Two-stroke dirt bikes
KTM has three two-strokes in its range for adult riders. The two-stroke lineup consists of the 125 SX, the 150 SX and the 250 SX. The first two models are strongly related, logically given the small difference of 19 cc. The 150 SX has a cylinder capacity of 144 cc and was mainly developed for overseas markets. Although you can also use it here as a two-stroke alternative in the MX2/250cc class. Moreover, it is possible to turn a 125 SX into a 150 SX by only replacing the cylinder head, cylinder and piston.
KTM gives the two-stroke models for 2019 a redesigned frame. In addition to more stiffness, the new frame should also improve the handling and straight-line stability of the machines. From now on, the machines will also have a slightly longer subframe and the swingarm has also been redesigned, so that the rear wheel can now be pushed 5mm further back. Other components such as the saddle and tank also received a new design.
KTM also tackled its two-stroke crossers on a mechanical level. For example, the radiators were placed lower, making the machines narrower. The machines also received a new airbox and a redesigned exhaust system. To make optimal use of these new components, the Mikuni carburettors were given new adjustment options. Furthermore, the two-strokes received a new clutch with a steel diaphragm.
Four-stroke models
In 2019, KTM's four-stroke sub-range will continue to consist of three models: the 250 SX-F, the 350 SX-F and the 450 SX-F. Like the two-strokes, they received a reworked frame, subframe and swingarm. Furthermore, the saddle, fuel tank and bodywork were also redesigned.
Mechanically, all four-stroke models received a new clutch with steel diaphragm, a revised gearbox, and a redesigned throttle body. The four-stroke also received a new lithium-ion battery for the electric starter and an accompanying redesigned wiring harness.
The engine management system was also overhauled. The KTM dirt bikes already had traction control, but now they get launch control on top. You can also choose from different motorcycle folders. All this is controlled via the push buttons on the left handlebar.
However, the flagship of KTM's MX lineup, the 450 SX-F, received the most attention from the engineers. The cylinder head of the machine was completely redeveloped, resulting in a new single overhead camshaft with improved valve timing.
Quality components
KTM emphasizes that its dirt bikes are finished with quality components. This is done with parts from Brembo (brakes and hydraulics), Dunlop (tyres), Neken (steering) and of course sister company WP that is responsible for the suspension components. KTM's 2019 motocross models will arrive at the brand's dealers over the course of next month.
Photos: KTM
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