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250 XC-F - 2019


Model Description

KTM continues the powerhouse revolution with its range of world-leading 4-Stroke engines. The sheer power, rideability and performance of the KTM 4-stroke bike makes it difficult to beat in all classes. For the MY 2019 all models feature reworked engines and set a new benchmark again when it comes to performance, power delivery and rideability.

The 250 XC-F engine is based on the new generation 250 SX-F, with updates on valve timing, exhaust, airbox and EMS the entire power pack produces even more torque and power across the entire rpm range up to 14,000 rpm. Its compact architecture contributes to an excellent mass centralization. This supports the easy rideability of the bike together with a low weight of only 25.8 kg, including the incredibly beneficial electric starter.

The centerpiece of the compact DOHC (double overhead camshaft) engine is the cutting-edge cylinder head. It features two overhead camshafts which activate the titanium valves (intake 32.5mm, exhaust 26.5mm) via super-light finger followers with a hard DLC coating. The exhaust cam shaft features a new timing for improved power delivery.

In the short cylinder that has a bore of 78mm, works a lightweight, forged bridged box-type piston made by CP. It features a unique piston crown shape adapted to the combustion chamber and stands out with its extra rigid structure, combined with a low weight. The compression ratio is at 14.4:1. Thanks to the low oscillating masses, the engine displays extremely lively characteristics.

The 250 XC-F's has a rigid crankshaft which features a connecting rod with a plain big end bearing featuring two force-fitted bearing shells run directly on the crank pin. This design is a major prerequisite for the extremely high engine speed levels and the unrivalled maximum power of the 250cc engine. Not only that, it enhances the engine's durability, allowing long crankshaft service intervals, which is a huge customer benefit in relation to time, effort and cost.

In order to balance the mass-forces the 250 XC-F engine uses a multifunctional counter balance shaft, which at the same time drives the water pump and timing chain.

The 250 XC-F is fitted with a unique electric starter as standard, which is well known as a clear advantage when it comes to crunch time in the heat of battle. A strong starter motor made by Mitsuba and the proven starter drive guarantees efficient and reliable starting.

The design of the die-cast engine cases allowed for minimal weight and a very centralized shaft configuration. This makes the engine very short and compact, while contributing to an efficient centralization of masses. The engine covers feature a surface structure, which reduce the wear caused by the rider's boots.

A newly developed DS (diaphragm steel) clutch features a one-piece clutch basket combined with the primary gear made of high-strength billet steel. It guarantees unbeatable reliability and contributes to the narrow engine size due to its compact rivet-less design. It is fitted with extremely heat-resistant steel carrier friction discs which ensure a good disengagement of the clutch. These are pre-tensioned by means of a diaphragm spring, substantially reducing the operating force required to pull the clutch. The Brembo hydraulic system provides easy and precise modulation.

The 250 XC-F uses a new 6-speed transmission made by PANKL RACING SYSTEMS ensuring the highest durability and reliability level. There was no need to change the gear ratios that are perfectly matched to the power delivery.

An advanced "NO DIRT” gear lever design prevents dirt from blocking the joint of the lever and guarantees safe activation of the transmission.

All four-stroke engines are fitted with a gear sensor giving the option of different engine characteristics for each gear.

The state-of-the-art Keihin Engine Management System, with electronic fuel injection, features a new 44mm throttle body, which provides a spontaneous response and maximum performance thanks to its unique injector position. This guarantees excellent atomization of the fuel with the air on its way to the combustion chamber. In addition there are separate systems for cold start and idle adjustment. A reworked throttle cable mount allows for smoother routing of the cables and better access, an improved seal of the MAP sensor (MAP = Manifold-Absolute-Pressure) makes the system even more reliable.

The ECU features new maps adapted to the new exhaust and cylinder head and it regulates the unique traction and launch control. In addition it provides different maps for optimal power characteristics for each gear according to the information received by the gear sensor.

Model Specification


Engine Type

Single cylinder, 4-stroke, DOHC, 4-valve




Electric starter, Lithium Ion 12V 3Ah


6 gears, semi-close ratio

Engine Lubrication

Pressure lubrication with 2 oil pumps


Liquid cooled


Wet multi-disc DS clutch, Brembo hydraulics


Keihin EMS



Central double-cradle type


5/8 x 1/4

Steering Head Angle

63.9 degrees

Tank Capacity

9 litres


Primary Gear Ratio


Secondary Gear Ratio


Brake System Front

Disc brake 260 mm

Brake System Rear

Disc brake 220 mm


Front Suspension

WP Suspension USD AER 48mm

Rear Suspension

WP shock absorber with linkage

Suspension Travel Front

310 mm

Suspension Travel Rear

300 mm



78 mm


52.3 mm



Ground Clearance (unloaded)


Seat Height


Weight (No Fuel)

100.2 kg