KTM EXC Models/Series Timeline, Specifications & Photos

The 500 EXC-F is the strongest Enduro bike in the world, although that doesn’t mean it’s a bully. This motorcycle is as lean and civilized as a thoroughbred racehorse. But let it rip, and its all-new 4-stroke SOHC engine flings the redesigned chassis across all sorts of terrain. Probably ahead of the competition.

The 450 EXC-F is fitted with a unique electric starter as standard, which is a clear advantage when it comes to crunch time in the heat of battle. A strong starter motor and a reliable lithium ion battery will fire up your 450 time and time again at the push of a button. In order to reduce weight to the minimum, there is no kick-starter. You won’t miss it. If by any chance you do, just retrofit a PowerParts replacement kit to get your kicks.

The new 350 EXC-F engine features a design with similar dimensions to the 250 EXC-F, but delivering 450-style power. This fuel-injected powerhouse has been redesigned in order to make it more compact and lighter, while delivering better torque and power figures over the entire rev range. The new architecture with an optimized shaft configuration makes the engine 20mm shorter, which contributes to mass centralization and easier rideability of the new bike.

The 300 EXC will reign supreme for many more seasons to come, thanks to its engine’s all-new architecture with a new shaft arrangement for better mass centralization, a new cylinder with twin-valve controlled power valve, a new counter balance shaft for less engine vibrations, a new well-integrated electric starter, a reworked 6-speed transmission and a hydraulically operated DDS clutch.

The new 250 EXC-F engine has been redesigned in order to make the new powerplant more compact and lighter, while delivering class-leading torque and power figures over the entire rev range. The new architecture with an optimized shaft configuration makes the engine 20mm shorter, which contributes to the bike’s mass centralization and effortless rideability. Another major benefit of the new design is the weight reduction by 1.5kg, down to hardly 27.6kg. And that’s including the comfort of an electric starter. The power curve now reaches for the sky over the entire length of the rev range, begging for another gear at 12,800rpm. This makes the new 250 EXC-F brilliantly suited to both amateur riders as to pros at the peak of their ability. And it’s Euro IV homologated, so the planet will love you for it.

The KTM 250 EXC SIX DAYS has bodywork with extremely slim ergonomics and excellent contact points between rider and machine. It provides unlimited freedom of movement and has the styling to match this glamorous event.

The engine of the 250 EXC has been known and respected for being the most powerful 2-stroke engine in its class. But we thought the segment could use an extra push and a solid statement: 2-strokes have a future at KTM. Their outstanding power-to-weight ratio, low cost and simplicity see to that. Putting our money where our mouth is, we gave the 250 EXC engine an all new architecture with a new shaft arrangement for better mass centralization, a new cylinder with twin-valve controlled power valve, a new counter balance shaft for less engine vibrations, a new well-integrated electric starter, a 6-speed Enduro transmission and a hydraulically operated DDS clutch.

The 2005 KTM offers the 450 EXC Racing, featuring a carbureted 448 cc single-cylinder engine with 1 cylinder and 4 valves per cylinder, producing 56 hp. KTM says the 450 EXC Racing weighs 113.04 kg (250 pounds) dry, has a 1480 mm (58.3 in) wheelbase, a 925 mm (36.4 in) seat height, and a 8.5 liters fuel tank.

My 250 EXC Racing has a Chrome Moly double cradle frame and alloy sub-frame. The small 8.5 litre fuel tank hangs down over the engine to keep things narrow and the weight low which gives a reasonable fuel range.

The KTM EXC was one of the off-road bikes that Austrian motorcycle manufacturer KTM Sportmotorcycle AG released for the 2005 model year. It can be considered a higher-level version of the SX, another off-road bike from KTM. The 2005 KTM EXC is powered by a liquid-cooled single-cylinder engine. The two-stroke version goes on the EXC 200 and EXC 250, while the four-stroke version is found on the other models.

The cockpit is standard KTM 525 EXC Racing fare, which is to say, it's well laid out. The seat is slim and flat. The thing feels narrow but not as much as last year's bike. The bars seat pegs layout is comfortable and automatically gets you up the front of the bike. With plenty of power in every situation, it dominates in the open class, whoever your opponents are. The distance to the person behind you is controlled simply by the right-hand wrist. The international EXC versions have a small headlight, speedometer, tail-light and somewhat softer linkless (PDS) rear suspension.

This motorcycle has made a big impression on the 400 cc, four-stroke market. The KTM has taken a slightly different approach to the configuration of the engine in 2000. The power delivery is smooth, almost the same as the Husaberg. The WP suspension package is firm and aimed at the competition end of the market. I had a bit of trouble getting an even response from the inverted front forks on the first ride. The cause even when the bike was stationary.

With its ultra-easy handling, minimal weight and low costs, the 125 EXC is the ideal enduro for the E1 class. The free-revving and lively two-stroke engine is the most powerful of its type and has gained even more performance for the current season.

The 1999 KTM 530 EXC-R is a series of four-stroke enduro off-road motorcycle made by KTM. They are essentially the 400/450 EXCs with changes to the bore or stroke to achieve larger displacements. Like the other KTM enduro offerings they vary in the set-up and components. The international EXC versions have a small headlight, speedometer, tail-light and somewhat softer linkless (PDS) rear suspension. One of the most aggressive off-road motorcycles on the market today, the KTM 450-530 EXC-R manages to provide an incredible riding experience and that is mostly due to the

impressive four-stroke power that its redesigned XC4 engine delivers. No matter the cylinder capacity chose the EXC-R proves able to deal with anything that the trails might threaten while leaving the competition well behind.

These early KTM motors had 297 cc displacement with 72 mm x 73 mm bore/stroke. Still the 300 hadn't reached its full potential. The bike was also offered as the 300 DMX, a California desert version. Back then the 300 had torque at low revs. It still has torque at low revs, but all that evolving has turned the 297cc engine into a more motocross-style powerplant with a BFM and a top-end that tends to drop off at the extreme end of the rev range, although experts are the only ones likely to complain about that.

The KTM EXC was one of the off-road bikes that Austrian motorcycle manufacturer KTM Sportmotorcycle AG released for the 2005 model year. It can be considered a higher-level version of the SX, another off-road bike from KTM. The 2005 KTM EXC is powered by a liquid-cooled single-cylinder engine. The two-stroke version goes on the EXC 200 and EXC 250, while the four-stroke version is found on the other models. KTM has been a continuous technological force, leading the industry with innovations like power valves, USD forks, water cooling and other technological leaps of the 80s, and more recently ('95 model year) the first dirt bike manufacturer to return to conventional slider forks.