2018 KTM 250 EXC-F
A RECIPE FOR SUCCESS
Fill an agile, state-of-the-art chassis with an engine delivering class-leading power and torque. Then dress it with top class components, ensuring that the new 4-stroke maintains its edge over the competition. The result is a READY TO RACE dual sport suitable for amateur explorers, while still satisfying the pros. Eat that, adversaries.
Features may include:
KTM R&D, KISKA Design and the factory racers had their say in shaping the plastics with one goal: complete harmony between rider and bike. Perfect ergonomics and contact points provide maximum comfort in movement on the EXC-F. The I-beam structures of the front and rear fenders guarantee maximum stability and a low weight thanks to well thought-out construction and mounting. They also stay cleaner for longer. Clever brake hose routing on the front number plate prevents wear and tear.
New graphics convey the READY TO RACE character of the 2018 KTM EXC-F model line.
The light and compact KTM 250 EXC-F engine delivers class-leading torque and power over the entire rev range. The architecture with an optimized shaft configuration makes for excellent mass centralization and effortless rideability, at only 60.8 pounds. And that’s including the comfort of an E-starter. The power curve reaches for the sky over the entire length of the rev range, begging for another gear at 12,800rpm. This makes the new KTM 250 EXC-F brilliantly suited to both amateur riders as to pros at the peak of their ability.
- 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.
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
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 å«No Dirtå« gear shift lever design prevents mud or dirt build-up in the joint for trouble-free rides. For 2018, the transmission shaft gets a new bearing that has a bigger overlap in the cases. This means reliability even under extremely hard conditions.
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.
- 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. This means quick and agile handling. The engine covers feature an advanced surface structure to reduce the wear caused by the rider’s boots.
- BALANCER SHAFT
To balance the mass forces, the engine uses a multifunctional balancer shaft that also drives the water pump and timing chain.