The KTM 350 EXC-F WESS is built to conquer the diverse and difficult challenges thrown at competitors in the WESS Enduro World Championship. From blasts through fast trails to the technicality of large obstacles, the blend of power and response from all aspects of this motorcycle ticks the boxes for a vast range of rider capabilities. This special model allows KTM Enduro fans to get close to the factory READY TO RACE set-up. Applied for the first time in a KTM Enduro model, the WP XACT air fork technology offers works treatment to every KTM fan. Additional and exclusive upgrades include the factory wheels with their anodized hubs, radiator fan and protectors, a racing seat, a Supersprox stealth rear sprocket, a map select switch, rear brake safety wiring, CNC machined triple clamps and much more. This remarkable 4-stroke model is given a distinctive WESS graphics style to complete the look.
Compact dimensions with an unbelievable power output, the KTM 350 EXC-F WESS model's fuel-injected DOHC engine offers the best power-to-weight ratio on the market. Its class-leading power delivery is available throughout the entire rev range and the light weight of just 28 kg, makes it almost as light as a 250, while offering power and torque closer to a 450 cc. With Euro IV homologation, it's not only considerately green, but leaves the competition green with envy too.
The KTM 350 EXC-F WESS engine is fitted with a compact DOHC cylinder head for optimal mass centralization while contributing to even better handling. The head configuration, with 2 overhead camshafts controlling the gas flow through the ports, promises outstanding, enduro-specific engine characteristics. The DLC coated finger followers, as well as the lightweight valves they actuate (intake 36.3mm, exhaust 29.1mm), allow for higher engine speeds, a crucial factor in the 350's dynamic performance.
The KTM 350 EXC-F WESS model's crankshaft is located in an ideal position close to the center of gravity, contributing to easier handling. It utilizes a short connecting rod, which makes for an overall compact and lightweight engine with a snappy power delivery. A plain big (bottom) end bearing with two force-fitted bearing shells runs directly on the crank pin. The engine's pressurized lubrication system provides the necessary oil feed for this bearing. This design has a direct benefit for the crankshaft with extended service intervals, which are lengthened due to the plain bearing. So just pin it, all day long.
CRANKCASES AND ENGINE COVERS
The compact engine cases are manufactured using a high pressure die-cast production process which helps with weight reduction, while retaining strength and durability. The design allows for a very centralized shaft configuration, making the engine very short and compact, while contributing to an efficient centralization of mass. Additionally, the engine covers feature a smart surface structure which reduces wear caused by the rider's boots, keeping them looking as fresh as the day you bought it.
The KTM 350 EXC-F WESS features a robust 6-speed transmission made by PANKL Racing Systems. The gears are made of a strong, forged raw material, ensuring the highest durability and reliability level. There was no need to change the gear ratios that are perfectly matched to the power characteristics of the engine. All four-stroke engines are fitted with a gear sensor, giving the option of different engine characteristics for each gear.
ENGINE MANAGEMENT SYSTEM
The state-of-the-art Keihin Engine Management System, with electronic fuel injection, features a 42 mm throttle body with separate systems for cold starting and idle adjustment. The throttle cable mount allows for easy access and a smooth routing of the cables. The ECU features selectable engine maps which are optimized to the exhaust, airbox and engine configuration, regulating the unique traction control and are activated by the handlebar map-select switch. It also provides different maps for each gear, according to the information received from the gear sensor, ensuring maximum power as you shift through the gears.
CYLINDER AND PISTON
The extremely short 88mm bore cylinder, features a reworked cooling concept that works together with the new, forged bridged box-type piston made by CP. The piston crown geometry has been adapted to suit the high-compression combustion chamber. Despite its incredibly low weight, it has an extra rigid structure for enhanced durability. Thanks to its lightweight construction, the oscillating masses are low, giving the engine extremely lively characteristics. To further improve engine performance, the compression ratio has been increased from 12.3 to 13.5 : 1.
The multifunctional side-mounted counter balance shaft masterfully balances all the oscillating forces, while also driving the water pump. It effectively keeps engine vibrations to a minimum, resulting in the smoothest ride even at the highest engine speeds.
The KTM 350 EXC-F WESS is fitted with the extremely durable, KTM-developed DDS clutch (damped diaphragm steel), with a wear-free steel basket and heat resistant clutch plates. It uses a diaphragm spring instead of the usual coil springs, which results in considerably easier clutch action. Additionally, the Brembo hydraulic system provides easy and precise clutch modulation throughout the entire operating temperature range.
The standard electric starter on the KTM 350 EXC-F WESS uses a proven starter drive and a strong starter motor made by Mitsuba. As demonstrated time and time again, it provides quick and reliable starting, saving you precious time and energy when you need it most.
ALWAYS OPTIMAL COOLING
Maintaining the optimal engine temperature is crucial to ensuring consistent horsepower throughout the ride. The KTM 350 EXC-F WESS features radiators which are mounted close to the center of gravity and match the design of the shrouds perfectly, in order to achieve perfect ergonomics. By using CFD technology (Computational Fluid Dynamics) and a smart coolant circuit routing, the innovative system ensures optimum engine temperature for the highest performance, in all conditions. Above all, the delta distributor, integrated into the frame triangle, features a large center tube, making the coolant flow from the cylinder head to the radiators highly efficient. The radiators have special protectors that protect from flying rocks and debris while also acting as a brace to disperse energy around the radiators in the event of an impact.
FINELY TUNED EXHAUST
When it comes to power delivery and performance, the exhaust plays a key role and packs a punch that is hard to beat. All 4-stroke EXC models feature two-piece header pipes which can be disassembled easily and allow easy access to the shock. The aluminum muffler sleeve has a short and compact profile, bringing the weight closer to the center of gravity for better mass centralization.
The KTM 350 EXC-F WESS features a high-tech, lightweight chromoly steel frames. This includes hydro-formed elements produced by state-of-the-art robot welding. With its race-proven geometries and optimal stiffness, the frame provides great feedback for the rider, playful handling and remarkable stability. The laterally attached engine head stays (the connection between cylinder, head and frame) are made of aluminum, reducing vibration and further contributing to precise cornering. The bikes also feature lateral frame guards with a structured surface, improving grip, while also serving as a heat protector against the muffler on the right side. The subframe is made of extra-light and stable aluminum profiles, weighing less than 900 gr, providing great rear fender stability.
The KTM 350 EXC-F WESS bike's one-piece aluminum swingarm is manufactured using a gravity die-cast production process, offering exceptional strength at the lowest possible weight. The single-component casting process offers low weight, perfect flex behavior and also allows for a large number of geometry solutions.
The KTM 350 EXC-F WESS in equipped with top-quality factory wheels, that are ultra lightweight while offering optimum durability in all conditions.
For the first time in a KTM EXC model, the KTM 350 EXC-F WESS machine features the WP XACT air fork, that has already proven its performance in several other Motocross and Offroad racing applications. The new forks offer a wide spectrum of adjustability providing Enduro fans and racers with the latest in suspension technology. It is a 48 mm USD air-sprung fork featuring separate functions in each fork leg, with damping on the right side and the air spring on the left. The left leg features a two-chamber system with a capsuled air cartridge, helping prevent loss of air pressure. Essentially, this means that in the rare case of a leaking outer seal, the internal cartridge pressure keeps the bike in a normal position. The air spring is exceptionally easy to use and can be adjusted to any rider weight via a single air valve and the air pump that is supplied with the bike. The right fork leg integrates a damping cartridge to fit single damping leg requirements and can be adjusted to the track conditions and the rider's preferences. Additionally, the fork top caps have a new design for improved, easy adjustment of compression from top, rebound from bottom (30 clicks each).
The WP XPLOR shock absorber is the key element on the proven PDS rear suspension design (progressive damping system), where the shock is directly linked to the swingarm without an additional linkage system. This keeps weight lower and reduces the chances of hooking on rocks. Optimal enduro-specific damping progression is achieved by using a second damping piston in combination with a closed cup towards the end of the stroke, and supported by a progressive shock spring. The settings on the XPLOR PDS shock provide impressive damping characteristics and match the frame and front-end set-up perfectly. It is fully adjustable, including high and low-speed compression, so you can set the shock up to suit any track, trail and rider preferences.
These high-tech Brembo babies are combined with lightweight Wave brake discs. You couldn't brake any harder or with better feel on an offroad motorcycle.
INSPIRED DESIGN FUEL TANK
The KTM 350 EXC-F WESS is fitted with lightweight polyethylene tank improving its ergonomics. The ¼‐turn bayonet filler cap makes for quick and easy closure. Manufactured using see‐through plastic, you will always be able to see how much fuel remains at a glance. It is fitted with an integrated fuel pump system and a fuel level sensor. Additionally, the fuel line features a 90° connector to the tank for better protection against damage.
The airbox on the KTM 350 EXC-F WESS ensures optimal flow dynamics, and together with the intake snorkels, results in optimal power and throttle response. Despite the obvious performance enhancements, the design also offers maximum protection against soiling of the air filter. The large Twin-Air air filter is mounted on a cleverly designed stiff cage that minimizes incorrect installation. As found on previous models, filter maintenance is quick and easy and does not require tools - a standard, original feature from KTM.
The KTM 350 EXC-F WESS is equipped with the same high-strength aluminum tapered NEKEN handlebar. The handlebar allows for four different positions. The handlebars come standard with an ODI vulcanized grip on the right side and a comfortable ODI lock-on grip, which does not require any wire or glue, on the left. All models can be fitted with an optional map-select switch on the handlebar for selecting alternative engine maps. The rider also has the option to activate TRACTION CONTROL from this optional switch; a unique feature which guarantees more efficient traction, especially in slippery conditions, and can be activated with the push of a button during riding.
Sophisticated ´No-Dirt´ footpegs prevent clogging up the pegs, even when digging in deep ruts. The pegs on the Enduro models are 6mm higher than the ones used on SX models, which benefits ground clearance. But you can swap them at will.
The special colors and graphics of this machine, intensify its READY TO RACE character.
BATTERY & WIRING HARNESS
All engines are fitted with the proven electric starter, which is a major benefit for any offroad activity. It is powered by a super lightweight 2 Ah lithium-ion starter battery, which provides safe, reliable starting. The wiring harness has most of the electrical components carefully positioned into a common area below the seat, making them easily accessible and reliable.
|Power in KW|
|Clutch||Wet, DDS multi-disc clutch, Brembo hydraulics|
|Design||1-cylinder, 4-stroke engine|
|Weight (without fuel)||103.8 kg|
|Tank Capacity (Approx.)||9 l|
|Front Brake Disc Diameter||260 mm|
|Rear Brake Disc Diameter||220 mm|
|Front Brake||Disc brake|
|Rear Brake||Disc brake|
|Chain||X-Ring 5/8 x 1/4"|
|Frame Design||Central double-cradle-type 25CrMo4 steel|
|Front Suspension||WP XPLOR-USD, Ø 48 mm|
|Ground Clearance||355 mm|
|Rear Suspension||WP Xplor PDS shock absorber|
|Seat Height||960 mm|
|Steering Head Angle||63.5 °|
|Suspension Travel (Front)||300 mm|
|Suspension Travel (Rear)||310 mm|
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