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Home / Bikes /Enduro / 250 EXC-F

250 EXC-F

ktm-250-exc-f

A RECIPE FOR SUCCESS

The 250 EXC-F was built with an inherent competitive edge. A state-of-the-art chassis keeps you feeling as agile as a rock climber while it's class-leading power and torque will have you punching well above your weight - no matter if you're a pro racer or weekend warrior.

CYLINDER HEAD

CYLINDER HEAD

The centerpiece of the compact DOHC engine is this cutting-edge cylinder head. It features light, dual overhead camshafts with friction-optimized cam followers boasting a hard DLC coating. Four lightweight titanium valves and high-flow ports maximize the flow rate for an optimal power band and outstanding performance across the seemingly endless rev range of 12,800rpm. Two lateral stays allow an efficient fixation of the engine to the frame and reduce vibration.

CRANKSHAFT

CRANKSHAFT

The KTM 250 EXC-F's crankshaft utilizes a short connecting rod, making 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. This design is a must for the extremely high engine speeds and the unrivaled power of this 250cc engine while also enhancing the engine's durability for long crankshaft service intervals

CRANKCASES AND ENGINE COVERS

CRANKCASES AND ENGINE COVERS

The design of the die-cast engine crankcases allows for a centralized shaft configuration, moving the crankshaft close to the bike's center of gravity. All hail mass-centralization! The engine covers feature an advanced surface structure to reduce the wear caused by the rider's boots.

COOLING

COOLING

KTM's proven cooling system routes the coolant from the cylinder head through the frame triangle, directly to aluminum radiators made by WP. Thanks to flow optimized internal circulation and CFD-calculated ventilation, the system is superbly efficient. In addition, the radiator protectors improve heat dissipation. Especially in the mud. They are also integrated into the front part of the shrouds to protect the radiators in a crash.

EXHAUST

EXHAUST

Noise limits are a real challenge for every manufacturer. Therefore, KTM has put a lot of effort into the development of its exhaust systems. All 4-strokes are fitted with a short muffler, mounted as close to the engine as possible. This means more power, extra mass centralization and better rideability. An advanced internal design reduces the noise sufficiently to sit safely below the noise limit, while still providing the engine response and performance that is expected from a KTM.

FRAME

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 aluminum engine head stays (the connection between cylinder head and frame) contribute to precise cornering and a reduced vibration level. The engineers could pull off all that, while keeping 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 900g.

SWINGARM

SWINGARM

This state-of-the-art swingarm allows for an optimized mounting position of the PDS shock absorber, providing more progressive action. Furthermore, the cast aluminum design guarantees lower weight and a perfect flex behavior. The single-component casting process also eliminates any inconsistencies and weak points.

WHEELS

WHEELS

The EXC-F's wheels feature lightweight, CNC machined hubs and high-end Giant rims guaranteeing maximum stability at minimum weight. The wheels are fitted with MAXXIS tires perfect for surefooted performance off-road and stability on-road.

FRONT SUSPENSION

FRONT SUSPENSION

The 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. The forks can easily be adjusted for compression and rebound with the twist of a dial on the top of the forks. In addition, a sealed hydro-stop guarantees excellent resistance to bottoming-out. Due to high-quality materials and a state-of-the-art production process, the WP XPlor 48 fork with approx. 300mm of travel has outstanding response and damping characteristics. A comfortable preload adjuster can be retrofitted and allows for a simple spring preload setting in three steps without tools (standard, +3mm, +6mm).

REAR SUSPENSION

REAR SUSPENSION

The PDS is kind of a KTM trademark where the shock absorber is directly connected to the upper side of the swingarm. This setup boasts the best possible mounting geometry and provides amazingly progressive damping. The shock absorber is mounted close to the centerline, which means nearly symmetrical loads for the swingarm and frame and more space for the exhaust system. 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 for exceptional bottoming resistance. Various machined and anodized components and a distinctive WP color trim make this a valuable, high-end product compared to the less refined shock absorbers of the competition.

BRAKES

BRAKES

You can't brake any harder, better, faster or stronger. High-tech Brembo calipers are combined with lightweight Wave brake discs. The steel-flex front brake hose has efficient protection and there's an integrated channel for the speedometer cable. First you outrun them, then you outbrake them.

FUEL TANK

FUEL TANK

The lightweight polyethylene tank has a capacity of 8.5 liters. You will always be able to see how much fuel remains at a glance, thanks to the see-through plastic. By pushing the orange release button in the center of the fuel tank cap, the bayonet mechanism makes refueling quick and easy. 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.

AIRBOX

AIRBOX

The air filter box design offers maximum protection of the air filter against soiling, while ensuring maximum airflow in a quiet way. The 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 can pop a fresh one in with a face full of mud without tools and in seconds.

HANDLEBAR

HANDLEBAR

KTM engineers know how to handle handlebars. This tapered unit, made of high-strength aluminum by NEKEN, features a 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 requires no glue or wire to secure it. You can retrofit two interchangeable throttle cams, for different response characteristics to suit your specific needs. With an optional map select switch you can select an alternative power characteristic and activate the unique traction control, a major benefit under wet riding conditions.

FOOTPEGS

FOOTPEGS

Sophisticated 'No Dirt' footpegs prevent jamming up of the pegs, even when digging in deep ruts. The pegs on the EXC models are 6mm higher than the ones used on SX models, which benefits ground clearance. But you can swap them at will.

DECALS

DECALS

New graphics convey the READY TO RACE character of the 2019 KTM EXC-F model line.

BATTERY & WIRING HARNESS

BATTERY & WIRING HARNESS

A strong lithium ion battery breathes life into the engine and contributes to low vehicle weight. The lightweight battery and wiring harness are centralized in a compartment above the air filter box, allowing the mechanic to remove the subframe without getting in conflict with the electronics. A happy mechanic is a good mechanic.

TRANSMISSION

TRANSMISSION

The engine is fitted with a precise 6-speed Enduro transmission, with solid shift engagement thanks to a special low-friction coating on the shift forks. An advanced 'No Dirt' gear shift lever design prevents mud or dirt build-up in the joint for trouble-free rides. All KTM 4-stroke engines are fitted with a gear position sensor that syncs the power curve to each gear.

ENGINE MANAGEMENT SYSTEM

ENGINE MANAGEMENT SYSTEM

The state-of-the-art Keihin engine management system with electronic fuel injection features a 42mm throttle body. Thanks to its unique injector position, the engine's response gives a whole new meaning to the word 'instantaneous'. Separate circuits for cold-starting and idle make on-site adjustments easy. Push the throttle back when the engine is warmed up and the cold start mode disengages.

CYLINDER AND PISTON

CYLINDER AND PISTON

Inside the cylinder, with a bore of 78mm, thumps a reliable box-type piston made by CP. Its crown geometry is adapted perfectly to the high-compression combustion chamber (12.8:1), where its rigid structure and low weight maximize performance. Thanks to low oscillating masses, the engine revs freely with plenty of power.

BALANCER SHAFT

BALANCER SHAFT

To balance the mass forces, the engine uses a multifunctional balancer shaft that also drives the water pump and timing chain.

CLUTCH

CLUTCH

The KTM 250 EXC-F employs the KTM-developed DDS clutch (damped diaphragm steel) with a wear-free steel basket and extremely heat resistant clutch plates and nitrated steel liners. This clever design employs a diaphragm spring instead of the usual coil springs, making for considerably easier clutch action. A diaphragm spring also leaves sufficient space for a damping system to be integrated into the clutch hub. The goal is traction, but durability is as well. Light operation and telepathic amounts of control are standard with this hydraulic Brembo actuated clutch.

E-STARTER

E-STARTER

The KTM 250 EXC-F is fitted with a unique E-starter as standard, which is a clear advantage when it comes to crunch time in the heat of battle. A strong starter motor made by Mitsuba will fire time and time again at the push of a button. Even under extreme conditions, thanks to its more heat resistant O-ring.

Engine

  • Design

    1-cylinder, 4-stroke engine

  • Displacement

    249.91 cm³

  • Bore

    78 mm

  • Stroke

    52.3 mm

  • Starter

    Electric starter

  • Transmission

    6-speed

  • Clutch

    Wet, DDS multi-disc clutch, Brembo hydraulics

  • EMS

    Keihin EMS

  • CO2 Emissions

    78.8

  • Fuel Consumption

    3.4

Chassis

  • 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 °

  • Ground clearance

    355 mm

  • Seat height

    960 mm

  • Tank capacity (approx.)

    8.5 l

  • Weight READY TO RACE (without fuel)

    103 kg

The illustrated vehicles may vary in selected details from the production models and some illustrations feature optional equipment available at additional cost.
All information concerning the scope of supply, appearance, services, dimensions and weights is non-binding and specified with the proviso that mistakes, printing, setting and typing errors may occur; such information is subject to change without notice.