KTM SX

KTM SX

Just a shade above the 50 SX in KTM’s pecking order for upstart dirt bikes is the 65 SX . Whereas the former caters to the little tikes, the latter is just the right sports machine for all up-and-coming riders from 8 to 12 years of age and up to a height of about 1.60 m (5.25 ft).

The design of the bike is relatively simple and easy-to-use, something that kids will have a good time with while not worrying about all the complicated trinkets that adult bikes come with. On top of that, the 65 SX boasts of an impressive 65cc two-stroke engine that excels, thanks to its PCEV (Pressure Controlled Exhaust Valve) exhaust control system, with a great deal of torque from the bottom end up and very linear power development, making it correspondingly easy to ride.

The 65 SX’s engine is mated to a six-speed transmission, and when combined with a generous suspension travel and high-quality components, the mini-crosser provides everything necessary for having plenty of fun and laying the foundations for a promising MX career.

In terms of its handling characteristics, the 65 SX features a newly developed, fully adjustable WP telescopic fork that is generously dimensioned with 35 mm outer tubes. The anodized handlebars from Renthal are manufactured from a high-quality aluminum alloy. Likewise, four-piston brake calipers and wave discs have been fitted at the front and rear of the bike while aluminum spoked wheels and the nickel-coated exhaust system round off the image of a mini-crosser that kids will undoubtedly enjoy.

Find out more about the KTM 65 SX after the jump.

When you’ve graduated from the introductory dirt bikes in KTM’s line-up, the next step is riding a junior bike that has championship tradition. Kind of like the KTM 125 SX.

Those wanting to race in the Junior World Championship need look no further than this beauty to stay competitive. The free-revving and lively two-stroke engine has gained even more performance for the current season. If you thought that the 125 SX’s 125cc 1-cylinder 2-stroke engine was impressive, its newly developed exhaust expansion chamber has not only improved in quality, but it now comes with an optimized soundbox that ensures an extra shot of engine power that’s explosive and dependable, all at the same time.

The 125 SX also comes with a completely revamped frame made from high-quality chrome-molybdenum steel that’s extremely light and torsion-resistant. The bike is also characterized by a particularly balanced geometry that combines playful handling with razor-sharp precision. The two-strokes in the MX range from KTM are also now equipped with an elaborate linkage rear suspension system.

Linking the shock absorber via a lever system provides high progressiveness and wide adjustment ranges. Apart from the new linkage rear suspension, there is the new cast aluminum swingarm, which is designed for minimum weight while supplying optimum lateral stiffness and defined longitudinal flexibility. This makes a major contribution to the 125 SX’s excellent tracking stability, playful handling, and extreme traction, making for a bike that’s got plenty of substance to back up its long-standing tradition as a motocross bike that has a history of championship-winning performances.

Find out more about the KTM 125 SX after the jump.

Young riders interested in the world of dirt biking need to have a start-up bike that they can use to learn the ropes. Fortunately, KTM has an answer in the 85 SX 17-14.

The 85 SX 17-14 is the kind of start-up dirt bike that can train future champions as they fight for a place on the podium. You only need to look at one Henry Jacobi and his championship winning performance in the 2010 season as evidence of the bike’s overall capabilities. The 85 SX masters the toughest MX tracks with unperturbed ease. The grown-up KTM mini-crosser combines fully-fledged MX technology with perfect controllability, providing for a versatile bike that can challenge the competition with relative ease.

It’s a unique motorcycle built to last. Its 85cc engine comes packed with a six-speed transmission that always seem to have the right gear ratio available. Likewise, the frame, brakes, and suspension have all been integrated with the machine and makes that performance incredible and powerful.

The 85 SX’s lightweight and sturdy chassis is made up of a chrome-molybdenum steel frame with a bolted-on aluminum subframe. A 43 mm (1.69 in) fully-adjustable, upside-down fork from WP has been optimized and the WP PDS shock absorber has adjustable rebound and compression damping, making the bike capable of mastering even the toughest of MX courses without demanding too much of the rider.

For a bike that has proven to be championship-caliber, the KTM 85 SX 17-14 is the right choice for riders looking to break into the mini-motocross scene.

Find out more about the KTM 85 SX 17-14 after the jump.

Anybody that has ever ridden a motocross bike understands the thrill of it all. Those that have taken it a step further and competed in motocross understand that there’s nothing like it.

That’s why, if you’re part of the latter and you want to race in the Junior World Championship, you need not look further than the KTM 125 SX . Designed with slim bodywork emphasized by a slim seat and spoiler lines, the 125 SX is the kind of bike that young riders can go to battle with.

What’s better, the free-revving and lively 125cc two-stroke engine has gained even more performance for the current season, something that seems highly improbable given the impressive credentials of its predecessor.

But the thing that makes the 150 SX such a special motocross bike is that KTM has built a completely new frame and a new, progressive linkage rear suspension. Apart from the new linkage rear suspension, there is the new cast aluminum swingarm, which has been designed for minimum weight and supplies optimum lateral stiffness and defined longitudinal flexibility. This is a major contribution to the 150 SX’s excellent tracking stability, playful handling, and extreme traction.

The further improved upside-down telescopic fork incorporating closed-cartridge technology now ensures even greater punch with a somewhat tauter setting. At the same time, the WP fork with 48 mm (1.89 in) outer tube diameter bolsters the playful handling of the 150 SX to levels that are championship worthy.

If somebody asked you what junior motocross bike you’d like to have on your side in the strongest of competitions, you won’t find anything better than the 150 SX.

Find out more about the KTM 150 SX after the jump.

Looking at the models that are included in the line-up of motocross bikes from KTM , you’d be remiss to wonder whether these guys are building one too many iterations.

That, of course, is the wrong way to look at things because if you’re a glass-half-full kind of guy, you know that more means, well, more choices. And that’s exactly what KTM has to offer.

One of the purest two-stroke bikes in the company’s line-up is the 250 SX . It offers a completely revamped frame made from high-quality chrome-molybdenum steel that’s both light and tough all at the same time. It is also characterized by a particularly balanced geometry that combines playful handling with razor-sharp precision. Just like the entire range of KTM bikes, the 250 SX is also now equipped with an elaborate linkage rear suspension system that raises the bar even higher for 250cc machines.

Apart from the new linkage rear suspension, the 250 SX also comes with a new cast aluminum swingarm, designed for minimum weight distribution while supplying optimum lateral stiffness and defined longitudinal flexibility. The results of all this is a bike that provides excellent tracking stability, playful handling, and extreme traction.

Moreover, the technology of a two-stroke engine that has been fitted into the 250 SX comes with indisputable advantages, including a high power/displacement and low weight that’s unrivaled in its class. The 250 SX’s flow-optimized intake flange between the airbox and carburetor now ensures even better charging with fresh gas, making for a bike that performs and handles like the best of them.

Find out more about the KTM 250 SX after the jump.

We dare anyone to find us a bike that has a better resume than the KTM 250 SX-F . Really, when you look at three consecutive MX2 world championship titles, it’s very difficult to top that, especially when the aforementioned 250 SX-F has been improved compared to its predecessor.

The new 250 SX-F is now available with a revamped chassis and an electric starter that proves its worth in many situations, turning the bike with the smallest four-stroke in the KTM MX range into a certified, world-class, championship-caliber moto cross bike.

The 250 SX-F’s compact, state-of-the-art DOHC four-stroke engine has been derived directly from the Marvin Musquin’s world championship bike, which means that it’s bigger and better than ever before. The 2012 model year of the 250 SX-F also comes with a new electric starter that excels with an extremely wide usable rev range and powerful performance from the bottom end up to beyond the nominal engine speed.

The 250 SX-F also has a new technology in the form of a Keihin engine management system with electronic fuel injection and electronic throttle valve control, ensuring spontaneous responsiveness and maximum performance from the engine.

As far as handling is concerned, the 250 SX-F’s state-of-the-art frame is made from high-quality chrome-molybdenum steel, a material that’s both lightweight and extremely durable, providing balanced geometry that combines playful handling with razor-sharp precision. The 250 SX-F’s linkage rear suspension bolsters playful handling and extreme traction while a lightweight aluminum swing arm has been designed for optimum lateral stiffness while the linkage of the now more tautly-set WP shock absorber via a lever system provides high progressiveness and wide adjustment ranges.

There’s plenty to love about the KTM 250 SX-F. The fact that it has a history of championship success only makes this bike that much more attractive to young and up-and-coming riders.

Find out more about the KTM 250 SX-F after the jump.

Once upon a time, we had dreams of being world-class motocross riders and if fate hadn’t lead us in another direction, we’d be achieving those dreams with a high-caliber motocross bike that has earned the distinction of the best in the market today, the KTM 350 SX-F .

The initial idea behind this bike was to line up at the MX1 World Championship with something that features reduced displacement, but also comes with all the advantages of a lighter bike. The final result was the birth of the 350 SX-F and foundations of a world title run in its first season. For the 2012 model, the 350 SX-F comes back bigger, better, and a whole lot meaner than ever before.

The 350 SX-F’s title-winning, state-of-the-art DOHC four-stroke engine features an electronic fuel injection and a balancer shaft that excels with an extremely wide usable rev range, highly efficient rideability, and performance capabilities that practically match that of its big brother, the 450.

Adding to its already impressive engine credentials, the 350 also features a cylinder head with two overhead camshafts, four titanium valves that are actuated by extremely lightweight, and carbon-coated cam levers. The 350 SX-F’s state-of-the-art frame is made from high-quality chrome-molybdenum stew, a material that’s not only extremely light but is also torsion-resistant, a critical combination that makes for excellent ride ability and world-class performance.

Find out more about the KTM 350 SX-F after the jump.

When it comes to motocross bikes, KTM offers a full breadth of some of the most powerful bikes on the market, including the spectacular KTM 450 SX-F .

The 450 SX-F’s high-quality chassis allows advanced riders to convert the brutal power of the brand’s innovative DOHC four-stroke engine into controllable traction, even on the toughest MX tracks. Add that to a newly-developed clutch and a robust steel cage, and you have a motocross bike that’s truly the class of the field. Especially when you throw in the transmission-friendly back-damping that makes use of a spring washer for the first time instead of the customary conical springs, substantially reducing the operating force.

Adding to the bike’s unbridled versatility and all-around functionality is a new technology for the exhaust. In conjunction with the innovative HPRS (Header Pipe Resonator System) and large-diameter silencer, the 450 SX-F’s super-light titanium exhaust manifold ensures plenty of power at low noise levels.

In terms of its design, the 450 SX-F was built to compete, featuring a state-of-the-art frame that’s made from high-quality chrome-molybdenum steel. The bike’s bodywork is extremely slim, making for a dynamic ride that’s characterized by a particularly balanced geometry that combines easy handling with razor-sharp precision.

Handling and ride ability are always chief requirements for world-class motocross riders. On both those fronts, the KTM 450 SX-F is in a true class of its own, making it an ideal choice for riders looking to make a name for themselves in the motocross world.

Find out more about the KTM 450 SX-F after the jump.

Posted on by Maxx Biker

Most of KTM’s dirt bike fans have started on this bike or at least heard that it’s the best thing – built by the Austrian manufacturer – to start on if planning to hit the motocross tracks and even compete in a few races after gaining enough experience. Not to be compared with any of the 125 cc four-strokes is the 2009 KTM 105 SX, a machine that is light, maneuverable and which benefits of the all-important two-stroke engine performance to call it a blast around the track. Yes, it’s a 105 cc; you can start getting over it now…or get on riding.


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