Motorcycle specifications KTM250 EXC-F Six Days 2018 Six Days of Injection

This challenge begins with the 250 EXC-F, when you think of 4-strokes. No other brand in off-road motorsports has a track record comparable to that of KTM. The special edition SIX DAYS models pay tribute to this success with special performance enhancements and high-end components. In 2017, the International Six Days of Enduro (ISDE) will be held in Brive-la-Gaillarde, France, and the KTM model range has been equipped to outwit all the pitfalls that these muddy, rocky terrains can present. Cock-a-doodle-doo!

sIX DAYS EQUIPMENT
six Days saddle for optimum comfort over long distances, exclusive Six Days graphics in a striking design, power curve change knob on the handlebars, handlebars with Six Days logo, Six Days silencer (anodized anthracite, with Six Days logo), Orange-anodized machined fork crowns for perfect fork fit and function, Cooling fan on all 4-stroke models for optimum temperature management in extreme conditions, Floating front brake disc.floating front brake disc for even braking in extreme conditions, solid rear brake disc (non-openwork/non-perforated) for improved thermal resistance and reduced brake pad wear,- Supersprox Steerable rear crown for improved braking performance in extreme conditions.Supersprox Stealth bi-metal rear sprocket with aluminum inner sprocket and toothed steel outer sprocket for unparalleled durability, Tire axle for quick front-wheel removal, Orange frame, Engine guard, Orange chain guide

eNGINE

the 250 EXC-F's engine has undergone a major facelift. More compact and lighter, it's nonetheless very powerful, with plenty of torque throughout the rev range. Thanks to its new architecture and optimized shaft configuration, the engine has been shortened by 20 mm, which is a real plus in terms of mass centralization and driving pleasure. Another significant advantage of the new design is that the engine weighs just 27.6 kg, a reduction of 1.5 kg. The addition of an electric starter is also a real boon for riders. With a generous power curve across the entire operating range up to 12,800 rpm, the new 250 EXC-F is well equipped to satisfy professionals and amateurs at the top of their game. And since it's Euro IV-approved, it's also more respectful of our environment.

cULASSE

the centerpiece of the compact DOHC engine, the new avant-garde cylinder head features twin overhead camshafts.150g lighter, 30% harder DLC-coated rockers designed to minimize friction, and a redesigned timing chain. Four ultra-light titanium valves and high-flow ports maximize flow for optimum operating range, and deliver breathtaking performance throughout the rev range up to 12,800 rpm. at this point, you've almost broken the sound barrier. Two new side brackets have been added to secure the engine to the frame and reduce vibration.

eNGINE MANAGEMENT SYSTEM

the Keihin engine management system with electronic fuel injection features a 42 mm throttle body. Thanks to the injector's unique position, engine response is truly instantaneous. And because idle and cold start do not use the same circuits, on-site adjustment is much easier. Once the engine is sufficiently warm, simply lower the throttle to deactivate the cold-start mode.

eLECTRIC STARTER

The 250 EXC-F comes with an electric starter as standard, a decisive advantage when the going gets tough. Operated at the touch of a button, this ultra-powerful Mitsuba starter is combined with a highly reliable lithium-ion battery and KTM's proven drive system.

gEARBOX

thanks to the low-friction coating of the shift fork, the 6-speed enduro gearbox is a model of precision and smoothness. The "zero dirt" design of the selector avoids clogging and jamming of the lever joint, and guarantees perfect gearbox reliability. All 4-stroke engines are equipped with a gear sensor that adapts the power curve according to the gear engaged and the terrain.

cRANKCASES AND ENGINE COVERS

the entirely new design of the molded crankcases offers a much more centralized shaft configuration. Engineers have succeeded in moving the crankshaft closer to the motorcycle's center of gravity, moving the clutch shaft back 11.1 mm and up 26.9 mm. This has shortened the engine by 2 cm, which is far from insignificant in terms of mass centralization. The new engine covers feature an advanced surface structure to prevent premature wear caused by the rider's boots.

cOOLING SYSTEM

kTM's proven cooling system circulates coolant from the cylinder head through the frame triangle to the new aluminum WP radiators, equipped with a new cap system and made of a stiffer alloy. Its incredible efficiency is due to improved internal airflow management and advances in ventilation thanks to CFD (Computational Fluid Dynamics) calculations. Well thought-out radiator guards integrated into the front spoilers are particularly useful in the event of an impact.

lIGHTING

the main objective of KTM engineers in developing the new EXC generation was to make the bike as light as possible. The result is clear: today's EXC models are among the lightest and sleekest enduro bikes on the market, despite the fact that they are equipped withthey are now equipped with a highly beneficial electric starter, whereas competing models still have to be kick-started.

fRAME

the high-tech chromium-molybdenum steel frame is a model of lightness, flexibility and handling.the high-tech chromium-molybdenum steel frame, a model of lightness, suppleness and maneuverability, offers excellent stability and devilishly precise cornering. Thanks to its high torsional stiffness and low longitudinal rigidity, this frame better absorbs the energy generated by the front and rear suspensions when jumping or negotiating a bump. The ride is more comfortable and less tiring. The dropouts that link the cylinder head to the frame are as light as ever. Mounted laterally, they help limit vibration levels. Two threaded inserts have been provided in the lower cradle tubes to add a shoe, should the need arise. The engineers can be proud of their work, as the frame is now one kilo lighter than the lightest competing frame on the market today. Every effort has also been made to facilitate maintenance and free up space for the fuel tank and other components. The ultra-light rear section, made of stable aluminum profiles, weighs in at less than 900 grams.

oSCILLANT ARM

the new design optimizes the position of the PDS shock absorber for even smoother entry into action. In addition to a significant weight saving (-220 g), cast aluminum offers ideal bending behavior. The one-piece molding process eliminates the imperfections inherent in welding, guaranteeing a more homogeneous manufacturing quality.

fOOTREST

sophisticated "zero-dirt" footrests prevent the gear selector from fouling, even when passing through deep ruts. To enhance ground clearance, the gear selector on EXC models is 6 mm higher than on SX versions.

fRONT SUSPENSION

the WP XPlor 48 upside-down fork is a fork with separate damping circuits, developed by WP in close collaboration with KTM. Each fork arm has a different spring and a different function: the left arm handles compression damping, while the right arm handles rebound. To fine-tune each of these settings, simply turn the knob at the top of the fork. New fork forks and setups have also improved sensitivity, lightened weight and optimized fork damping behavior. To reduce the risk of bottoming, the fork is equipped with a sealed hydraulic stop. High-quality materials, an ultra-sophisticated production process, 300 mm of travel: nothing has been left to chance to make the new WP Xplor 48 fork the ultimate in responsiveness and damping. The preload ring (available as standard on Six Days models) makes it easy to adjust spring preload to three levels (standard, +3 mm, +6 mm), without the need for tools.

fORK TIPS

all Six Days models feature top-of-the-range fork tees (CNC-machined and orange-anodized) with a 22 mm offset, for improved fork retention and even more precise front-end behavior. Four positions are possible on the bike to move the handlebars forwards or backwards for a perfect grip.

rEAR SUSPENSION

the bike is equipped with an all-new PDS XPlor shock absorber developed by WP. A true KTM trademark, the progressive damping system (PDS) has proved its worth time and again. As the shock absorber is connected directly to the upper part of the swingarm, it does away with the linkage system. This set-up has been redesigned with the new frame and swingarm architecture in mind. It's based on impeccable geometry and even more progressive damping. The body, also completely redesigned, features a smaller piston and a larger chamber. To save precious grams, the piston diameter has been reduced from 50 to 46 mm, the overall length has been cut by 2.5 mm and the shock absorber stroke has been reduced by 4 mm. As the shock absorber has been moved 5 mm closer to the central axis, the loads exerted on the swingarm and frame are virtually symmetrical. This also frees up space for the exhaust system. The second piston, combined with a cup-shaped limit stop (instead of a needle stop), is supported by a progressive-action spring. This part has been lightened by over 600 grams. With its various machined and anodized components and its characteristic WP color scheme (black chamber, white spring and silver body), this ultra-sophisticated shock absorber makes a strong impression.

bRAKES

more responsive, more efficient and more powerful, Brembo calipers will cope with any situation. These little jewels of technology are combined with Wave brake discs, renowned for their lightness. The stainless-steel front brake hose features effective protection and a cable guide for the speedo wire. Optimum braking power is a must when you intend to push your machine.

gUIDON
this NEKEN handlebar is made of high-strength aluminum and has a profiled profile. It features a throttle response mechanism, sturdy aluminum handlebars and an ultra-simple guard adjustment system. right: an ODI vulcanized handle; left: the ODI lock-on handle, as comfortable as it is practical, thanks to its glueless, wire-free mounting system. And thanks to two interchangeable cams (retrofittable), you can adapt the throttle response to suit your riding style. With the power curve change knob (standard), you can change engine mapping and activate the traction control system for extra punch in wet conditions.

fUEL TANK

thanks to its transparent plastic, the ultra-light 8.5-liter polyethylene fuel tank lets you know at a glance how much fuel is left. To refuel, simply press the orange button in the center of the cap to open the bayonet mechanism. Four-stroke models feature an integrated fuel pump system and an additional fuel level sensor. The 90-degree fuel connection on new models enhances protection against damage.

eXHAUST

complying with the noise emission levels recommended by the FIM is a real challenge for all manufacturers. That's why KTM has spared no effort to develop a state-of-the-art exhaust system. All four-strokes feature new manifolds and a shorter silencer, mounted as close as possible to the engine. The benefits are threefold: more power, better mass centralization and enhanced driving pleasure. The internal design has also reached a significant degree of sophistication to keep noise levels well below FIM-recommended thresholds, while guaranteeing maximum rider sensations.

sADDLE

tailored to provide a comfortable support surface for enduro riding, this ultra-strong SIX DAYS saddle allows you to tackle any terrain with disconcerting control and minimal fatigue all day long.

cARÉNAGE

kTM factory riders collaborated on the bike's design with KTM R&D specialists and the Kiska design agency, with a single watchword: to create perfect harmony between rider and machine. Particular attention has been paid to ergonomics and rider contact points, to enhance freedom of movement and comfort on the EXC-F. The special shape of the front and rear mudguards guarantees maximum stability and minimum weight, thanks to a well thought-out structure and assembly. Best of all, they stay clean longer. The clever mounting of the brake hose on the front cross plate also reduces wear and tear.

Information and media credits: KTM