KTM 250 SX-F TROY LEE DESIGNS 2021

Produktinfo

Power Supremacy

There are fewer more spectacular stages for dirt bike racing than the glamour and allure of AMA Supercross and with the KTM 250 SX-F TROY LEE DESIGNS KTM have a special motorcycle utterly fit for purpose. Not only is the decorated KTM 250 SX-F tuned and modified for competition with a high performance DOHC engine and lightweight chassis design, but the raft of additional features really make the KTM 250 SX-F TROY LEE DESIGNS stand out. For 2021 count on the new Connectivity Unit and the myKTM App for simple engine and suspension set-up through a mobile device. There are also factory components such as the Akrapovič silencer, triple clamps, wheels, front fork start device, semi-floating front disc and Hinson clutch cover, among others. The TLD team graphics and orange frame make the motorcycle one of the sharpest lookers in the whole motocross catalogue.

Motor og eksos

Motor og Eksos

Renowned as the strongest engine in MX2 competition, the 2021 version maintains its dominance. Its compact structure contributes to excellent mass centralization, which supports the easy ride-ability of the bike. The addition of the Akrapovič silencer makes the KTM 250 SX-F TROY LEE DESIGNS a real force to be reckoned with.

Transmission

The KTM 250 SX-F TROY LEE DESIGNS 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 […]

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 map switch also gives the rider the chance to select an alternative power map besides the standard configuration, providing him […]

Exhaust

The KTM 250 SX-F TROY LEE DESIGNS comes with an Akrapovič Slip-On silencer as stadard that further improves the rider’s feeling and this unique bike’s aesthetics.

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 […]

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 TROY LEE DESIGNS and features a strong starter motor made by MITSUBA. The proven starter drive guarantees efficient and […]

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 TROY LEE DESIGNS 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 […]

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 TROY LEE DESIGNS 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) […]

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 TROY LEE DESIGNS 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

The frame on the KTM 250 SX-F TROY LEE DESIGNS 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 of the frame delivers responsive handling and works perfectly with the suspension to provide excellent agility and high-speed stability. All 2021 KTM SX frames feature a highly durable powder coating and come with standard frame protectors. The subframe is made from lightweight aluminum and provides great feeling for the rider, as well as easy movement across the seat.

Wheels

The KTM 250 SX-F TROY LEE DESIGNS machine is fitted with high-end Factory wheels. They feature black D.I.D DirtStar rims and fully CNC-machined orange anodized hubs. Together with black spokes and orange anodized aluminum nipples, they guarantee minimal weight at maximal stability so that the rider will feel an increase in handling. Dunlop Geomax MX3S […]

Triple clamp

The KTM 250 SX-F TROY LEE DESIGNS features factory triple clamps anodized in orange. The triple clamp has a precisely calculated stiffness and adjustable offset (20 – 22 mm) to match the flex characteristics of the frame and fork. The result is a front end that all works in perfect harmony, contributing positively to the […]

Swingarm

The 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 swingarm’s chain measurement […]

Rear suspension

The KTM 250 SX-F TROY LEE DESIGNS features 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 […]

Fuel tank

The KTM 250 SX-F TROY LEE DESIGNS is fitted with lightweight polyethylene fuel tank. 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

The KTM 250 SX-F TROY LEE DESIGNS is fitted with the super-lightweight WP XACT fork with AER technology. 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 a two-chamber system with […]

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 airbox on the KTM 250 SX-F TROY LEE DESIGNS ensures optimal flow dynamics, and together with its intake snorkels, leads to maximum power and quick throttle response. Despite the obvious performance advantages, the design also offers maximum protection against soiling of the air filter. The large Twin-Air air filter is mounted on a cleverly […]

Ergonomi og komfort

ERGONOMI OG KOMFORT

A special blue seat cover with silicone strips improves the looks of the bike and provides optimal feel and grip for the rider. The seat is conveniently fixed to the bike using one long, lateral screw, making it secure and easy to handle.

Handlebar

The KTM 250 SX-F TROY LEE DESIGNS is fitted with a 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 […]

Footpegs

Sophisticated ´no-dirt´ footpegs prevent clogging of the footpeg pivot, even when digging in deep ruts. Looking for a higher riding position? Then just mount the footpegs of the EXC models, which are 6mm higher than the SX versions

Bodywork og dekaler

BODYWORK OG DEKALER

Offering a fast and aggressive look the inlay graphics perfectly replicate the race machines of the US-based TLD race team.

Programvare og elektronikk

PROGRAMVARE OG ELEKTRONIKK

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.

TRACTION CONTROL

TRACTION CONTROL is a highly beneficial feature that guarantees more efficient traction and better control of the bike when accelerating on wet or slippery hard pack surfaces. It can be activated by the handlebar map switch during riding.

LAUNCH CONTROL

By pushing both buttons on the map switch, the rider can activate LAUNCH CONTROL, which ensures a more efficient launch out of the start gate. It reduces the maximum engine speed for the very first moment of the start to give better control. The EFI control lamp mounted on the upper triple clamps flashes when […]

HANDLEBAR MAP SELECT SWITCH

With one touch of a button, the map switch gives the rider the chance to select between a standard map setting and a more aggressive map for loamy, high grip dirt conditions. This is particularly useful for changing track conditions or for a rider that is looking for more control as he begins to fatigue. […]

Tekniske detaljer

TECH DETAILS

Engine
TRANSMISSION
5-speed
STARTER
Electric starter
STROKE
52.3 mm
BORE
78 mm
CLUTCH
Wet multi-disc DS clutch, Brembo hydraulics
DISPLACEMENT
249.9 cm³
EMS
Keihin EMS
DESIGN
1-cylinder, 4-stroke engine
CHASSIS
WEIGHT (WITHOUT FUEL)
101 kg
TANK CAPACITY (APPROX.)
7 l
FRONT BRAKE DISC DIAMETER
260 mm
REAR BRAKE DISC DIAMETER
220 mm
FRONT BRAKE
Disc brake
REAR BRAKE
Disc brake
CHAIN
5/8 x 1/4″
FRAME DESIGN
Central double-cradle-type 25CrMo4 steel
FRONT SUSPENSION
WP XACT-USD, Ø 48 mm
GROUND CLEARANCE
370 mm
REAR SUSPENSION
WP XACT Monoshock with linkage
SEAT HEIGHT
950 mm
STEERING HEAD ANGLE
63.9 °
SUSPENSION TRAVEL (FRONT)
310 mm
SUSPENSION TRAVEL (REAR)
300 mm
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