‘XC’ means cross-country. ‘W’ represents its wide-ratio transmission. ‘KTM’ stands for winning. This model is a race-ready bike built for closed course enduro racing. With the agility of a 125 and enough muscle to take the fight to the 250 cc 4-Strokes, this bike punches well above its weight. That’s why when the going gets tough, the tough get an XC-W.
Less is More
- Engine: The new 150 XC-W engine is the most powerful and most competitive engine in its class, providing precisely the kind of power an Enduro rider wants. This 150 cm3 ripper has been developed with the latest KTM engineering know-how and the most advanced technology available. The results: whopping power and mountain conquering torque across the entire rev range, while being extremely compact and light. Out of breath? This little firecracker has your back.
- Cylinder and Cylinder Head: This compact cylinder with a 58 mm bore features a cutting-edge power valve unit with a sophisticated mechanism for the lateral support exhaust ports. Matched to a twin-component cylinder head, it is KTM’s secret to all-round grunt. The layout of the water jackets in the cylinder and head guarantees efficient heat dissipation when you’re riding at your limit. This will eventually happen, but just a little later than you’re used to.
- Engine Cases: For the latest engine generation the KTM engineers designed lightweight die-cast engine cases featuring a high crankshaft and clutch shaft position, located close to the center of gravity, which results in optimal mass centralization and outstanding rideability. In addition, the engine body is extremely lightweight and compact, while still able to house an electric starter. And because looks matter, newly designed engine covers feature an advanced surface structure in order to reduce the wear caused by the riders boots.
- Carburetor: As of model year 2017, all KTM 2-stroke models are fitted with new MIKUNI TMX carburetors, replacing the Keihin products. These 38 mm flat slide carbs live to provide smooth and controllable power all the way up to the limiter. And they’re less sensitive to different altitudes and temperatures, so you can pin it wherever, whenever.
- Transmission: A wide-ratio 6-speed Enduro transmission was designed specifically for the small 2-stroke Enduro engine, its gear ratios perfectly in sync with the 150’s power band. The latest production technologies allowed for compact dimensions and minimal weight. Keeping safety in mind, an advanced ´No Dirt´ gear lever design prevents muck from blocking the joint. Because even dirt lovers hate mud when it’s in the wrong places.
- Clutch: The clutch of the new engine is activated by a new hydraulic system made by Brembo instead of Magura. The reliable and self-adjusting unit guarantees light operation and highly controllable modulation.
- Exhaust: The engineers meticulously tuned the expansion chamber for maximum power, so this little screamer is as tough as it is strong.
- Piston: The 150 XC-W’s piston is optimized for maximal reliability and the reworked shape fits brilliantly to the new cylinder layout.
- Crankshaft: A reliable piece of engineering that has been skillfully balanced to guarantee minimal vibrations. It allows a decrease of the displacement to 125 cm3 just by replacing cylinder, piston and head. There’s no more need to change the crankshaft. Two-in-one in no time.
- Weight Reduction: The main target for the KTM engineers when developing the XC-W models was a massive weight reduction compared to the previous generation. The result: the current XC-W’s are the slimmest, lightest bikes in the Enduro scene.
- Frame: The high-tech, lightweight chrome-moly steel frame has a knack for easy handling, outlandish rideability, precise cornering and excellent stability. You can also count on high torsional rigidity and low longitudinal stiffness. This results in better absorption of the energy created from the front and rear suspension sucking up jumps and bumps. In short: more comfort and less rider fatigue. Laterally attached, lightweight engine head stays (the connection between cylinder head and frame) contribute to a reduced vibration level. Two threaded inserts in the lower cradle tubes allow for safe fixation of an optional skid plate. The engineers were able to pull off all that, while making their frame a big fat kilogram lighter than that of the lightest competitor on the market. In addition, it is easier to maintain, easier to work on and supplies more space for the tank and other components. The bike also features an extra-light subframe made of stable aluminum profiles, which tiptoes the scales at less than 900 g.
- Footpegs: Sophisticated ´No Dirt´ footpegs prevent smudging up the pegs, even when digging in deep ruts. The pegs on the EXC models are 6mm higher than the ones used on SX versions, which benefits ground clearance. But you can swap them at will.
- Swingarm: This updated design allows for an optimized mounting position of the PDS shock, providing more progressive action. Furthermore, the cast aluminum design guarantees lower weight (-220 g) and a perfect flex behavior. The single-component casting process also eliminates any inconsistencies and inherent weak points created by welding. And it’s better looking.
- Rear Suspension: The WP XPlor PDS is a newly developed rear shock. The PDS, the KTM proven and successful progressive damping system is kind of a KTM trademark where the shock absorber is directly connected to the upper side of the swingarm. We don’t use any linkage systems. This set-up has now been reworked with the new frame and swingarm architecture in mind. It boasts the best possible mounting geometry, provides even more progressive damping and features an all-new body with a smaller piston and a larger reservoir. The piston diameter was reduced from 50 to 46 mm for reduced weight, the total length is reduced by 2.5 mm and the shock stroke shrank by 4 mm. In addition, it is now mounted 5 mm closer to the centerline, which means nearly symmetrical loads for the swingarm and frame and more space for the exhaust. A second piston works together with a closed cup (instead of a needle) towards the end of the stroke and is supported by a progressive shock spring. It will be hard to bottom this rugged bad boy out. Still, we managed to cut its weight by more than 600 g. Various machined and anodized components and a distinctive WP color trim (black reservoir, white spring, silver body) make this a valuable, high-end product compared to the roughcast bodies of many competitors. You’d almost hate to see it get dirty. Almost.
- Front Suspension: The all-new WP XPlor 48 upside-down fork is a split fork developed by WP in close collaboration with KTM. It is fitted with a spring on both sides but features separated functions for each fork leg: compression damping is fitted on the left side, while rebound is on the right. So the forks can easily be adjusted for compression (left) and rebound (right) with the twist of a dial on top of the fork tubes (30 clicks each). In addition, a longer and sealed hydro-stop guarantees better resistance to bottoming-out. Due to high-quality materials and a state-of-the-art production process, the new XPlor 48 fork - with approx. 300 mm of travel - has outstanding response and damping characteristics and is about 200 g lighter than its predecessor. A new, optional preload adjuster (standard for SIX DAYS models, retro-fittable for standard models) allows for a threefold spring preload setting without any tools. Easy as one, two, three.
- Brakes: You couldn’t brake any harder, better, faster or stronger. These high-tech Brembo babies are combined with lightweight wave discs and feature reduced piston diameter for better modulation. The rear brake now features a 10 mm longer brake pedal and you get new, less aggressive brake pads all round. The steel-flex front brake hose gets more efficient protection and there’s an integrated channel for the speedo cable. First you outrun them, then you outbrake them.
- Handlebars: KTM engineers sure know how to handle handlebars. This tapered one, made of high-strength aluminum by NEKEN, features a newly developed throttle assembly with a robust aluminum body and easy free-play adjustment. An ODI volcanized grip sits on the right, while on the left side of the bar a comfortable ODI lock-on grip is mounted, which does not require any wire or glue to be fixed.
- Triple Clamps: The new generation is fitted with forged triple clamps with an offset of 22 mm, ensuring a solid grip of the fork and precise handling. You can move the handlebar forwards and backwards over 4 positions, so the bike should fit you like your Enduro gloves.
- Electric Starter: The design of the new 150 cm3 engine offers a home to the best perk in the dirt bike world: an electric starter powered by a reliable lithium ion battery. This magic button’s benefits are clear, especially for those of you looking to compete on an extreme level.
- Airbox: The airbox design, featuring new snorkels, offers maximum protection of the air filter against soiling, while ensuring maximum airflow in a quiet way. The new, large Twin Air filter is mounted in a stiff cage, which at the same time holds the system in place. This design is so simple, you could still pop a fresh one in with a face full of mud. Without tools. In seconds.
- Fuel Tank: A lightweight polyethylene tank with a capacity of 9.5 liters of juice. You will always be able to see how much fuel there’s left at a glance, thanks to the see-through plastic. By pushing the orange release button in the center of the filler cap, the bayonet mechanism makes refueling quick and easy.
- Wheels: The KTM wheels feature lightweight, CNC machined hubs and high-end Giant rims guaranteeing maximum stability at minimum weight. The wheels are fitted with the latest Dunlop AT81 tires. Take them wherever you like, traction will be waiting.
- Cooling System: KTM’s proven cooling system routes the coolant from the cylinder head through the frame triangle, directly to aluminum radiators made by WP, which have a new filler cap system and are made of a stiffer alloy. Due to flow optimized internal circulation and CFD-calculated air ventilation, the system is superbly efficient. In addition, well thought-out radiator guards integrated in the front part of the spoilers provide protection in case of crashes.
- Seat: Tailored to meet the needs of the world’s fastest backsides, this durable seat offers great comfort, while being 10 mm lower to help you master the most challenging terrain.
- Battery & Wiring Harness: These engines are fitted with KTM’s proven electric starter – a unique KTM feature and a major benefit at all levels of motocross racing. A super compact 495 g lithium ion starter battery breathes life into the engine, shaving off an entire kilogram of excess weight while offering three times the starting energy of a conventional battery. The battery and wiring harness are centralized in a compartment above the airbox, allowing the mechanic to remove the subframe without getting in conflict with the electrics. Because a happy mechanic, is a good mechanic.
- Bodywork: KTM R&D, Kiska Design and all our factory riders had their say in shaping the plastics. Their goal: complete harmony between rider and bike. And so it turned out. Perfect ergonomics and contact points, maximum freedom of movement, a low seat height and sweet comfort, especially in the rear part of the seat. The I-beam structures of the front and rear fenders are prime examples of such an intelligent design, guaranteeing maximum stability and a low weight thanks to well thought-out construction and mounting. Plus: they stay cleaner for longer. Or take a look at the headlight fairing. Can you spot the smart solution that makes sure your brake hose never leaves nasty scratches ever again?
- Graphics: A new, tailor-made kit, fit for a king. Because in this sport, champs deserve to look the part regardless of the dirt.
- Design: 1-cylinder, 2-stroke engine
- Displacement: 143.99 cm³
- Bore: 58 mm
- Stroke: 54.5 mm
- Starter: Kick and electric starter
- Transmission: 6-speed
- Primary drive: 23:73
- Secondary gear ratio: 13:50
- Clutch: wet multi-disc clutch, Brembo hydraulics
- EMS: Kokusan
- Frame design: 25CrMo4 steel central-tube frame
- Rear suspension: WP Xplor PDS shock absorber
- Suspension travel (front): 300 mm
- Suspension travel (rear): 310 mm
- Front brake: Disc brake
- Rear brake: Disc brake
- Front brake disc diameter: 260 mm
- Rear brake disc diameter: 220 mm
- Chain: X-Ring 5/8 x 1/4"
- Steering head angle: 63.5 °
- Wheelbase: 1471 ± 10 mm
- Ground clearance: 370 mm
- Seat height: 960 mm
- Tank capacity (approx.): 9.5 l
- Weight READY TO RACE (without fuel): 91.5 kg
LIST PRICE ON NEW, if shown, is Manufacturer's Suggested Retail Price (MSRP) and limited to stock# listed. Sale Price includes all manufacturer incentives, but does not include Destination Charge (Freight, PDI & Vehicle processing), tire levy, taxes or any applicable finance charges.