KTM 250 SX-F 2020

Produktinfo

DYNAMIC IN EVERY WAY

The KTM 250 SX-F was primed for global domination and is set to continue its dominance for 2020. Not only is it the lightest bike in its class, but it also offers an unrivalled, confidence-inspiring power delivery, making it a great choice for both amateur and professional riders. Laying the power down effectively is the secret to fast lap times and this capable package has all the right credentials to get the most important job done – getting to the chequered flag first.

Motor og eksos

Motor og Eksos

4-strokes have taken motocross to unthinkable new extremes in a playground where KTM is a dominant force. Lighter and more compact than ever thought possible, these well-balanced engineering masterpieces deliver class-leading power in the most dynamic way. Straight from the showroom floor, KTM 4-strokes offer READY TO RACE performance of the highest caliber.

TRANSMISSION

The KTM 250 SX-F is fitted with a robust 5-speed transmission. The gear ratios were carried over from its predecessor and are perfectly suited for the MX track. Another highlight of the transmission is the “no dirt” gear shifter. Similar to the footpeg design, it prevents the build-up of dirt and ensures the next gear […]

HANDLEBAR MAP SELECT SWITCH

Within easy reach of the left grip on all four-stroke models, is a multifunctional handlebar map switch, which features the innovative control functions; traction control; launch control and alternative power curves (standard <-> advanced). The TRACTION CONTROL is a unique feature that guarantees more efficient traction and better control when accelerating the bike, especially in […]

EXHAUST

When it comes to power delivery and performance, the exhaust on all 4-stroke models plays a key role and packs a punch that is hard to beat. It features a model specific header pipe with an advanced resonator called FDH (Flow Design Header), which is a small chamber around the pipe. The design allows the […]

ENGINE MANAGEMENT SYSTEM

The state-of-the-art KEIHIN Engine Management System, with electronic fuel injection, features a 44 mm throttle body. The injector position guarantees optimal atomization of the fuel and air on the way to the combustion chamber, resulting in instant response and maximum performance when opening the throttle. There are also separate systems for cold starting and idle […]

ENGINE

Renowned as the strongest engine in MX2 competition, the 2020 version maintains its dominance. Its compact structure contributes to excellent mass centralization, which supports the easy ride-ability of the bike. The 2020 model features a the new, stronger oil pump intermediate gear that, along with several other small, but important refinements, contributes to improved reliabiity. […]

E-STARTER

Time is crucial in the heat of the race and an electric starter gets you fired up and back in the battle as soon as possible. The electric starter is standard on the KTM 250 SX-F and features a strong starter motor made by MITSUBA. The proven starter drive guarantees efficient and reliable starting when […]

CYLINDER HEAD

An integral part of the class-leading power delivery is the cutting-edge DOHC (double overhead camshaft) cylinder head. It features two overhead camshafts which activate the titanium valves (intake 32.5 mm, exhaust 26.5 mm) via the super-light, DLC coated finger followers. The camshafts have a friction-optimized super-fine surface and a timing that delivers incredibly refined power.

CYLINDER AND PISTON

The 78 mm bore cylinder houses a lightweight, forged, bridged, box-type piston, made to the highest standards by CP. It has an extremely rigid structure and features a unique crown shape to suit the high-compression combustion chamber. The compression ratio is at 14.4:1 and thanks to the combination of low oscillating masses, the engine displays […]

CRANKSHAFT

The KTM 250 SX-F has a rigid crankshaft and a connecting rod that features a plain big end bearing with two force-fitted bearing shells run directly on the crank pin. This design was essential for the extremely high engine speeds and unrivalled maximum power of the 250 cc 4-stroke engine. The design also enhances the […]

CRANKCASES AND ENGINE COVERS

The compact engine cases are manufactured using a high pressure die-cast production process that helps with weight reduction, while retaining strength and durability. The design allows for optimal shaft arrangements close to the center of gravity, resulting in ideal mass centralization and easier ride-ability. The engine covers feature a smart surface structure that reduces wear […]

COOLING

Maintaining the optimal engine temperature is crucial to ensuring consistent horsepower throughout the ride. The KTM 250 SX-F features radiators which are positioned for a lower the center of gravity. Their design matches the shrouds perfectly and offers a great slim feel to the ergonomics. By using CFD technology (computational fluid dynamics) together with a […]

CLUTCH

The DS (diaphragm steel) clutch, literally puts the control back in the hands of the rider. It features a durable, one-piece clutch basket and primary gear, made of high-strength billet steel, guaranteeing unbeatable reliability. It is fitted with extremely heat-resistant steel carrier friction discs, which are pre-tensioned by means of a diaphragm spring, ensuring the […]

BALANCER SHAFT

In order to balance the mass-forces the KTM 250 SX-F produces, the engine is fitted with a multifunctional counter balance shaft. It effectively reduces vibration, while driving the water pump and timing chain.

Chassi

Chassi

Every rider knows that when the feeling on the bike is good, the ride is even better. The chassis forms an integral part of this “connection,” providing feedback between track and rider. The KTM 250 SX-F features a lightweight, high-tech steel frame that provides accurate rider feedback while also reducing the harshness of typical motocross terrain. For 2020, the suspension features improved damping characteristics. The reworked settings offer a slightly softer, more comfortable feel that, together with the flex characteristics of the chassis, contributes to an intuitive, high-performance ride like no other.

WHEELS

KTM uses lightweight, CNC-machined hubs and high-end Excel rims on all SX models, guaranteeing maximum stability and minimum weight. The aluminum spoke nipples feature a design that conveniently reduces the frequency with which the spokes need to be tightened. The wheels are fitted with the latest DUNLOP Geomax MX 3S tires, delivering maximum grip and […]

TRIPLE CLAMP

All KTM SX models feature top quality, CNC-machined triple clamps which have become a KTM trademark. The triple clamp has a precisely calculated stiffness and offset (22 mm offset for all models) to match the flex characteristics of the frame and fork. The result is a front end that all works in perfect harmony, contributing […]

SWINGARM

The KTM 250 SX-F’s one-piece swingarm, is manufactured using a gravity die-cast production process, for exceptional strength at the lowest possible weight. It offers a wide range of adjustment for the rear wheel, allowing for a shorter wheelbase on tighter twisty tracks, or a longer wheelbase for greater stability on longer, more choppy tracks. The […]

REAR SUSPENSION

All KTM SX models feature a WP XACT monoshock, which has been developed to work as a complete unit with the entire frame and swingarm architecture, as well as the linkage system and the WP AER AER fork. It features high-quality machined and anodized components, which add a touch of class and give it appeal […]

FUEL TANK

All models in the KTM SX range are fitted with lightweight polyethylene fuel tanks. The shape of the fuel tank allows for slim ergonomics without compromise to the 7 liter fuel capacity. The filler cap has an inside thread that makes for easy and reliable closure.

FRONT SUSPENSION

All full-size KTM SX models are fitted with the super-lightweight WP XACT fork with AER technology and feature updated settings for 2020. It is a 48 mm USD air-sprung fork with separate functions in each fork leg, with damping functions on the right side and the air spring on the left. The left leg features […]

FRAME

The frame on the KTM 250 SX-F has to cater for the dynamic riding styles typical of the class it fits into. As with the entire SX range, the frame is professionally crafted from hydro-formed chromium molybdenum steel tubes that are robot welded to ensure the highest levels of consistent quality. The carefully calculated stiffness […]

BRAKES

High-tech BREMBO brakes have always been standard equipment on all KTM motocross bikes. Combined with lightweight wave discs, the renowned system provides the highest level of braking efficiency, enabling you to out-brake the competition.

AIRBOX

The new airbox on the KTM 250 SX-F has been completely reworked to ensure better flow dynamics, and together with new intake snorkels, leads to optimal power and throttle response. Despite the obvious performance enhancements, the new design also offers maximum protection against soiling of the air filter. The large TWIN AIR air filter is […]

Ergonomi og komfort

Ergonomi og komfort

It is important for a rider to work in harmony with the motorcycle, maintaining momentum by moving together with the natural forces. The ergonomics on the 2020 range is optimal for high-level performance and provides a riding position that offers the best maneuverability and control. The handlebar position can also be adjusted to suit every rider size and ergonomic preference. A rider’s main interaction with the motorcycle comes through the bodywork, seat, footpegs and handlebars, which all play a vital role in overall control. When it comes to ergonomics, absolutely no compromises were made and only the best quality products feature on the 2020 KTM SX models.

SEAT

All KTM SX models feature a seat that perfectly matches the range’s dynamic performance-oriented ergonomics. The seat cover features silicone strips that provide better feel and grip for the rider. The seat is conveniently fixed to the bike using one long, lateral screw, making it safe and easy to handle.

HANDLEBAR

All full-size KTM SX models are equipped with the same high-strength aluminum tapered handlebar, made by NEKEN. The handlebar is fixed in rubber damped mountings, which allow for two 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 […]

FOOTPEGS

Sophisticated “no dirt” footpegs prevent smudging up the pegs, even when digging in deep ruts. Looking for a higher riding position? Then just mount the footpegs of the KTM 2018 EXC models, which are 6 mm higher than the SX versions.

Bodywork og dekaler

Bodywork og dekaler

KTM’s 4-stroke motocross machines set the industry benchmark when it comes to innovative technology and styling. With input from KTM factory riders, as well as KTM R&D and Kiska Design, the bodywork of the KTM 250 SX-F pushes the boundaries of style, function and progression. The result is a shape that achieves complete harmony between rider and bike. The main goal is to provide the optimal contact points for maximum freedom of movement and excellent handling. The front and rear fenders feature an intelligent I-beam design, guaranteeing maximum stability with the lowest possible weight.

DECALS

The new inlay graphics add to the fast and aggressive look of the bike and confirms KTM’s never-ending quest for race-winning progression.

Programvare og elektronikk

Programvare og elektronikk

4-strokes have defined the modern era of motocross – a playground where the KTM SX-F range has pushed the boundaries of performance innovation. To stay ahead in the competitive MX2 class, KTM equipped the 250 SX-F with a multifunctional handlebar map switch. The unit activates innovative features like traction control, launch control and even alternative power curves. By pushing performance to the absolute extreme, electronics became a necessary addition for ensuring power is delivered in the most effective way. KTM SX-F models also feature other unique advantages, like the proven electric starter. Now, more than ever, READY TO RACE performance is just the push of a button away.

BATTERY & WIRING HARNESS

All SX-F models feature a capable, super lightweight 2 Ah Lithium-Ion starter battery, ensuring quick and effective starting of the engine, especially in cold weather conditions. The voltage regulator and condenser, as well as all the electrical components are packaged in a common area below the seat, making the entire system compact and reliable.

Tekniske detaljer

TECH DETAILS

Engine
Design
1-cylinder, 4-stroke engine
Displacement
249.9 cm³
Bore
78 mm
Stroke
52.3 mm
Starter
Electric starter
Transmission
5-speed
Clutch
Wet multi-disc clutch, hydraulically actuated
EMS
Keihin EMS
Chassis
Frame Design
Central double-cradle-type 25CrMo4 steel
Front Suspension
WP XACT-USD, Ø 48 mm
Rear Suspension
WP XACT Monoshock with linkage
Suspension Travel (Front)
310 mm
Suspension Travel (Rear)
300 mm
Front Brake
Disc brake
Rear Brake
Disc brake
Front Brake Disc Diameter
260 mm
Rear Brake Disc Diameter
220 mm
Chain
5/8 x 1/4″
Steering Head Angle
63.9 °
Ground Clearance
370 mm
Seat Height
950 mm
Tank Capacity (Approx.)
7 l
Weight Ready To Race (Without Fuel)
99 kg
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