KTM 250 EXC TPI 2021

Produktinfo

The new generation KTM 250 EXC TPI is the ultimate combination of power and rideability and sets a clear benchmark for intuitive handling, unique style and top performance. Thanks to its groundbreaking TPI (transfer port injection) technology, this extreme machine continues to reach new heights, clearly demonstrating KTM’s unrelenting commitment to 2-stroke development. Besides the renowned benefits of excellent fuel efficiency, clean exhaust emissions and the removed need for jetting, the  KTM 250 EXC TPI features a dynamic, lightweight frame. It was developed with feedback from factory riders and in hindsight, returns the favor by offering excellent rider feedback.

Motor og eksos

Engine

The 250cc 2-stroke engine has plenty power and torque, but remains light enough for riders to muscle their way through the toughest obstacles. Thanks to state-of-the-art engineering, innovative 2-stroke design and revolutionary TPI fuel injection technology, the powerplant is even more refined than ever before. The compact and lightweight 2-stroke is a great choice for offroad riders who want usable enduro performance that is ready to conquer in the most extreme terrain. With Euro IV homologation, it’s not only considerately green, but leaves the competition green with envy too.

Transmission

The KTM 250 EXC TPI is fitted with 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. Another highlight of the 250 EXC TPI transmission is the no-dirt gear shifter. Similar to the footpeg design, it prevents the […]

TPI Alternator

To accommodate the power requirements of the engine management system, the TPI models are fitted with a powerful 196 W alternator and a voltage regulator. The same as can be found on the EXC-F 4-stroke models.

Throttle body

The TPI engine is fitted with a 39 mm throttle body made by Dell`Orto. The airflow is regulated by a butterfly connected with a twin-cable throttle cam, which is operated by the handlebar throttle assembly. A throttle position sensor provides airflow data to the control unit. The idle system allows the idle speed to be […]

Oil pump

Pre-mixing 2-stroke fuel is a thing of the past for KTM EXC TPI owners. The 2-stroke range is fitted with an oil tank featuring flexible mountings, which greatly improve durability and reliability. In addition, a mesh filter helps prevent dirt getting into the oil pump. Mounted below the oil tank, the oil pump delivers the […]

Exhaust

When it comes to power delivery and performance, the exhaust plays a key role and packs a punch that is hard to beat. The 250 cc and 300 cc models feature HD exhaust pipes (heavy-duty) made by using an innovative 3D stamping process which produces a ribbed surface finish. This makes the pipe much stronger, […]

Engine management system

The engine management system (EMS) of the TPI models features a control unit located below the seat. The ECU defines the ignition timing while the amount of fuel to inject is based on several sensor readings such as intake air pressure, throttle position and water temperature plus a new additional ambient air pressure sensor. Thanks […]

Cylinder

The KTM 250 EXC TPI cylinder has a bore of 66,4 mm and is fitted with a sophisticated power valve, which provides really smooth and controllable power characteristics. For the EFI application the cylinder features two lateral domes which hold the fuel injectors that supply fuel to the rear transfer ports. The downstream injection guarantees […]

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 optimal shaft arrangements close to the center of gravity, resulting in ideal mass centralization and easier ride-ability. Plus, the engine covers feature a smart surface structure which reduces […]

Cooling

Maintaining the optimal engine temperature is crucial to ensuring consistent horsepower throughout the ride. The KTM 250 EXC TPI 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) together with a clever […]

Clutch

The KTM 250 EXC TPI employs the KTM-developed DDS clutch (damped diaphragm steel) with a wear-free steel basket, 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 […]

Balancer shaft

Say goodbye to numb feet and hands. This engine design allows the implementation of a lateral balancer shaft in order to keep the vibrations to a minimum. You know what that means: more comfort, less fatigue, bigger smiles.

Chassi

Frame

All KTM EXC models feature a high-tech, lightweight chromoly steel frame. 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.

Wheels

KTM uses lightweight, CNC-machined hubs and high-end GIANT rims on all Enduro models, guaranteeing maximum stability and minimum weight. The aluminum spoke nipples feature an innovative design, which conveniently reduces the frequency with which the spokes need to be tightened.

Triple clamp

Fitted with forged triple clamps with an offset of 22mm, ensuring a solid grip of the fork and precise handling. The handlebar is adjustable forwards and backwards over 4 positions, so the EXC TPI will fit you like your favorite gloves.

Swingarm

The KTM 250 EXC TPI’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.

Rear suspension

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 […]

Fuel tank

All models in the EXC range are fitted with lightweight polyethylene tanks improving the 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 […]

Front suspension

All EXC models are fitted with the latest 48 mm diameter WP XPLOR upside-down forks, featuring a split fork design developed by WP and KTM. While each side is fitted with springs, they have separate damping functions. Compression damping is on the left and the rebound on the right. Both can easily be adjusted via […]

Brakes

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.

Airbox

The airbox on the KTM 250 EXC TPI 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 […]

Ergonomi og komfort

Handlebar

All KTM EXC models are equipped with the same high-strength aluminum tapered handlebar, made by NEKEN. 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. Additionally, all models can be equipped with an optional handlebar map select switch, which allows to select between a standard and advanced power curve.

Footpegs

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.

Bodywork og dekaler

Decals

The durable in-mold graphics convey the READY TO RACE character of the KTM EXC model line.

Programvare og elektronikk

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 more easily accessible and reliable.

Tekniske detaljer

TECH DETAILS

Engine
TRANSMISSION
6-speed
STARTER
Electric starter
STROKE
72 mm
BORE
66.4 mm
CLUTCH
Wet, DDS multi-disc clutch, Brembo hydraulics
CO2 EMISSIONS (BIKE)
59 g/km
DISPLACEMENT
249 cm³
EMS
Continental EMS
FUEL CONSUMPTION (BIKE)
2.55 l/100 km
Chassis
WEIGHT (WITHOUT FUEL)
103.4 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
25CrMo4 steel central-tube frame
FRONT SUSPENSION
WP XPLOR-USD, Ø 48 mm
GROUND CLEARANCE
370 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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