Motorcycle specifications KTM300 EXC TPI Six Days 2018

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 top-of-the-range 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.

eXCLUSIVE SIX DAYS STANDARD EQUIPMENT

six Days saddle for optimum comfort over long distances, Exclusive Six Days graphics with striking design, Handlebar-mounted power curve change knob, Handlebars with Six Days logo, Six Days muffler (anodized anthracite, with Six Days logo), Orange-anodized machined fork crowns for perfect fork fit and function, Thermal protection on all 2-stroke models for effective protection of the exhaustfloating 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 Stealth bi-directional rear sprocket.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 power-to-weight ratio and enduro capabilities of the new KTM 300 EXC TPI make it the undisputed queen of its class. Its brand-new TPI electronic fuel injection system sets a new benchmark for off-road competition in the 2-stroke segment. Its modern architecture and cutting-edge technology (perfectly protected electric starter, new cylinder with dual injector and control shaft, special 6-speed Enduro gearbox and hydraulic DDS clutch) explain why the KTM 300 EXC TPI is considered the absolute weapon when things get serious.

eNGINE MANAGEMENT SYSTEM

the engine management system (EMS) on TPI models is based on a new throttle body (with a larger diameter than the previous model).the engine management system (EMS) on TPI models is based on a new throttle body (39 mm in diameter) developed by Dell`Orto, and features a new control unit located under the seat. Ignition timing is calculated by the control unit. The precise amount of fuel to be injected depends on sensor readings such as ambient and intake air pressure, throttle position and oil and water temperature. As the system is designed to compensate for altitude and temperature fluctuations, injection requires no manual intervention by the pilot.

cYLINDER

the KTM 300 EXC TPI's new cylinder, with a 72 mm bore, features a sophisticated control spindle for smooth power delivery. The injectors responsible for introducing fuel into the rear transfers are positioned on either side of the new cylinder. Downward injection offers the advantage of excellent atomization with rising air. Combustion is therefore more efficient, resulting in fuel savings and lower emissions. A small tube at the rear of the cylinder is connected to the intake pressure sensor, which communicates the air flow to the control unit. In addition, the engine's character can be altered in a matter of seconds by adjusting the two springs on the control shaft.

mOTOR CARTER

for optimum mass centralization, KTM engineers have designed ultra-light, molded crankcases.and raised the position of the crankshaft and clutch shaft to bring them closer to the center of gravity, resulting in exceptional handling. This trick also freed up space to install a balance shaft, so that riders can swallow up the miles at full speed and in complete relaxation. Another interesting innovation to keep the engine as shiny as in the early days: crankcase covers with an elaborate surface structure designed to reduce wear caused by the rider's boots.

oIL PUMP

owners of a KTM EXC TPI can now do without the traditional 2-stroke oil/petrol pre-mix. An electronic oil pump circulates oil from the oil tank to the engine, via the throttle valve body, to ensure a perfect oil-fuel mixture, whatever the conditions and engine speed. The device, designed to reduce exhaust emissions by up to 50% compared with previous models, is controlled by the control unit according to engine speed and load, as measured by the throttle valve position sensor. With an oil capacity of 0.7 liters (enough for 5 to 6 full tanks of fuel), the rider can rest easy for a long time to come.

vILEBREQUIN

the 72 mm piston stroke remains the same, but everything else has changed. Re-balanced and modernized, the engine benefits from a new balance shaft that eliminates vibrations, but still delivers the same sensations. With its heavier rotor, the motor's inertia is greater than that of the SX model, but it provides an appreciable boost of power to get you out of the most unlikely situations.

bALANCING SHAFT

numb hands and feet don't have to be a problem. The engine's new design has made it possible to use a side-mounted balancer shaft, which contributes to a considerable reduction in vibration levels (50% less at handlebar and footrest level). This obviously has a beneficial effect on driving pleasure.

tHROTTLE BODY

The TPI fuel-injected engine features an all-new throttle body developed by Dell`Orto, with a diameter of 39 mm. The amount of air entering the engine is regulated by a throttle linked to a cam (with two cables) controlled by a new handlebar-mounted throttle. In addition, a throttle valve position sensor communicates air flow to the control unit, while idle speed is managed by the bypass screw. The cold-start device opens a bypass circuit to supply the extra air needed for cold starts. The oil drawn by the oil pump passes through the intake pipe before being mixed with the incoming air to lubricate the crankshaft bearings, cylinder/piston, etc.

eLECTRIC STARTER

the 300 cm3 2-stroke engine features a new electric starter, tucked away under the engine. The mechanism is less complex and even more reliable than its predecessor. And since it's powered by an ultra-powerful lithium-ion battery, there's no risk of it running down any time soon.

gEARBOX

the 6-speed gearbox, stepped specially for the Enduro, is a model of precision and smoothness. As safety is also an essential parameter, the selector adopts a new "zero dirt" design that prevents the lever joint from jamming due to dirt. After all, even greasy terrain enthusiasts take a dim view of mud when it gets lodged in the wrong places.

eMBRAYAGE

the KTM 300 EXC TPI uses a DDS (Damped Diaphragm Steel) clutch developed by KTM. a wear-free steel clutch housing, heat-resistant clutch plates and new nitrate-treated steel liners. This clever design is distinguished by the use of a diaphragm spring instead of the usual coil springs, giving the clutch greater flexibility. The diaphragm spring also leaves plenty of room for a damping system integrated into the clutch hub, to enhance traction and durability. The clutch is activated by a hydraulic system manufactured by Brembo, which plays an essential role in the clutch's progressiveness and flexibility.

eXHAUST

this nickel-plated exhaust system is by WP Performance Systems. Based on the carburettor model and derived from modern 3D production processes that give it remarkable precision and reliability, this muffler has been designed to exploit the full operating range and maximum power of the engine.

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 diabolical precision when 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 going over 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. On EXC TPI models, the fuel filler cap at the top of the frame feeds the oil tank via a hose inside the frame tube. The ultra-light buckle, 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 getting dirty, even when driving 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.

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.

rEAR SUSPENSION

the bike is equipped with a brand-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. End-of-stroke heels are a thing of the past. 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.

gUIDON

profiled and made of high-strength aluminum, these NEKEN handlebars feature a throttle control (with two cables for the EXC Tfor EXC TPI models, as for their 4-stroke counterparts), a new double-cable aluminum handlebar and an ultra-simple rear-grip adjustment system. right: a vulcanized handle; left: the ODI lock-on handle, as comfortable as it is practical, thanks to its glueless, wire-free mounting system. The handlebar-mounted power curve switch allows you to change engine mapping to suit all conditions.

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 support 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.

wHEELS

kTM engineers know a thing or two about wheels. Featuring ultra-light CNC-machined hubs and top-of-the-range Giant rims, these wheels guarantee maximum stability despite their limited weight. To top it all off, they're fitted with the latest generation of Maxxis tires. In addition to improved puncture resistance, the rear tire features a specially designed profile and internal structure to enhance grip in wet conditions. Whatever the terrain, these tires deliver maximum traction.

fUEL TANK

thanks to its transparent plastic, the ultra-light 9.5-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 tank in a flash.

aIR FILTER HOUSING

equipped with new intake snorkels, the air-filter housing has also been redesigned to provide even greater protection for the engine.the air filter housing has also been redesigned to better protect the air filter from clogging and ensure optimum air flow with complete peace of mind. The cage housing the new, extra-large Twin Air air filter is totally rigid, helping to hold the system in place. The design is so simple that you could replace the filter even with your face covered in mud. And you don't need any tools. And in a matter of seconds.

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.

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 plug 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.

bATTERY AND WIRING HARNESS

the electric starter is now combined with an ultra-compact lithium-ion battery, claimed to weigh just 495 g - 1 kg less than a conventional battery, despite being three times more powerful. The battery and wiring harness are now grouped together in a compartment above the air filter housing, so that the electrical circuit is not in the way when the rear section of the frame is removed.

aLTERNATOR

tPI models feature a more powerful generator capable of delivering 196W (as much as their 4-stroke EXC counterparts) to meet the power requirements of the engine management system. The new ECU mounted on the left-hand side of the steering column is carried over from the EXC-F models.

bODYWORK

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 was paid to ergonomics and contact points to enhance freedom of movement and comfort on the EXC. 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