- 1-cylinder 4-stroke engine, water-cooled
- Fuel injection
- 249 cc
The 250 SX-F has already proven its value wining many championships for KTM, so the 2014 model should have all it needs to remain in front of the pack.
At the heart of the 2014 KTM 250 SX-F lies a 1 cylinder, 4 stroke, water cooled engine with a displacement of 249.91 cc (15.2505 Cu In). For 2014, the 250 SX‑F gained a lighter, 5-speed gear box which further enhances the bike’s performances.
The 4 stroke engine breaths through a modern exhaust system that features new hydro-formed sections providing a plus of torque and fewer emissions.
The motorcycle’s backbone is represented by a stiff frame made of lightweight, high-strength chromoly steel sections. The frame combines maximum longitudinal stiffness with optimum torsional rigidity helping you get first class performances in terms of ride and handling.
Hit the jump for more information on the 2014 KTM 250 SX-F.
The ultimate winning bike
The 250 SX-F has been a constant of the MX2 World Championships, bringing the World Champion’s crown home five times in a row with Jeffery Herlings taking the 2012 title. Now, the machine’s success enters a new era with KTM’s first AMA Supercross Championship courtesy of Ken Roczen in the highly contested 250 SX West series. Championship performance proven by two of the world’s greatest - the KTM 250 SX-F is set to continue its dominant performance at the highest level.
Wheels and Brakes:
High-Tech Brembo brakes have always been standard equipment on KTM offroad bikes. Combined with the lightweight Wave discs, they are the ultimate solution in braking technology. The SX models gain a newly-developed master cylinder with a new reservoir, a smaller piston diameter and optimized lever kinematics. Combined with optimized brake pads, this makes for another perceptible improvement of front brake performance and action.
The wheels use lighweight, CNC-machined hubs, high-end Excel rims and spokes coated in black with lightweight aluminum nipples to achieve maximum stability at minimum weight. The OEM Dunlop Geomax MX51 tires deliver perfect traction and outstanding performance.
The 250 SX-F is fitted with an electric starter as standard - a clear advantage when it comes to crunch time in the heat of battle. In 2014, a newly-developed freewheel assembly is used to increase durability.
The proven integrated KTM cooling system routes the coolant from the cylinder head through the frame triangle directly to the aluminum radiators made by WP. As there are no hoses, the airflow beneath the tank is not impeded and fitting the radiators is easier.
The KTM 250 SX-F all but guarantees top positions in highly competitive motocross competition as proven by a multitude of World Championships and KTM’s first Supercross Championship. For 2014, KTM Engineers have implanted a lighter, 5-speed gear box into the powerplant to reduce weight and fine-tune MX performance. The combination of a compact engine layout and unrivaled power will make the 250 SX-F an undisputed winner.
The forged box-type piston stands out with its extra rigid structure, combined with minimum weight. Thanks to the low oscillating masses, the engine displays extremely lively characterisitics.
Top-quality, CNC-machined triple clamps have been something of a KTM trademark. Ensuring a precise handling, they perceptibly support the flex characteristics, and with it, the fork’s action.
The new hydro-formed sections of the exhaust system and additional resonator (Header Resonator System, HRS) provide the 250 SX-F models with extra torque while reducing their noise emissions.
The rear monoshock as well as the 48mm upside-down front fork by WP Suspension guarantee the best response and damping characteristics. In 2014, the fork has more reserves against bottoming out thanks to their optimized setting. Of course, compression and rebound damping can be adjusted to the track conditions and the rider’s preferences with a twist of the wrist - the rear monoshock even has separate high and low speed adjustments.
Designed using the latest in calculation and simulation software, the design and wall thickness of the cast aluminum swingarm have been optimized for minimum weight at optimum stiffness and precisely defined flexibility provides perfect stability at minimum weight. For 2014, the engineers have revised the chain guide to increase reliability while lowering the weight.
The state-of-the-art frame design made of lightweight, high-strength chromoly steel sections combines maximum longitudinal stiffness with optimum torsional rigidity. It guarantees easy handling and precise cornering, but also outstanding stability.
New classy graphics with clear lines visually underscore the exacting standards of what KTM deems a true, cutting-edge motocross bike.
All SX models are fitted with the super strong, tapered Renthal Fatbar 827 whose bend is especially well suited for the requirements of motocross. The proven standard KTM mount allows to fix the handlebar in four different positions. A large Renthal crash pad in a classy combination of black and silver, offers effective crash protection for the rider.
The airbox design offers maximum protection of the air filter against soiling while ensuring maximum airflow for top performance. The Twin Air filter can be changed without tools in seconds, a standard for KTM.
All models of the SX range have a new, lightweight polythene tank with a capacity of 1.98 gallons. The new filler cap with the inside thread makes for an easier and reliable closure. The 4-stroke models have the same fuel pump system as the 4-stroke Enduro models, which makes it easy to fit a larger tank from the PowerParts program.
Ergonomically perfect, the seat has received an improved foam core, ensuring greater comfort and durability.
In shaping the bodywork, the KTM designers’ ergonomic and design focus was to achieve complete harmony between rider and bike, down to the finest details. The front fender is a prime example of a moulded polymer component gaining maximum stability through a well thought-out structure and mounting.
|Engine type||1-cylinder 4-stroke engine, water-cooled|
|Displacement||249.91 cm³ (15.2505 cu in)|
|Bore||78 mm (3.07 in)|
|Stroke||52.3 mm (2.059 in)|
|Starting aid||Electric starter|
|Gearbox||5-gear, claw shifted|
|Engine lubrication||Pressure circulation lubrication with two Eaton pumps|
|Cooling||Water cooling, permanent circulation of coolant by water pump|
|Clutch||DDS-Multidisc clutch in oil bath/hydraulically activated|
|Ignition||Contactless controlled fully electronic ignition with digital ignition adjustment|
|Frame||Central tube frame made of chrome molybdenum steel tubing|
|Fork||WP Suspension Up Side Down 4860 MXMA CC|
|Shock absorber||WP Suspension 5018 BAVP DCC|
|Suspension travel Front||300 mm (11.81 in)|
|Suspension travel Rear||317 mm (12.48 in)|
|Brake system||Disc brakes, brake calipers on floating bearings|
|Brake discs - diameter Front||260 mm (10.24 in)|
|Brake discs - diameter Rear||220 mm (8.66 in)|
|Chain||5/8 x 1/4"|
|Steering head angle||63.5°|
|Wheelbase||1,495±10 mm (58.86±0.39 in)|
|Ground clearance, unloaded||376 mm (14.8 in)|
|Seat height, unloaded||992 mm (39.06 in)|
|Total fuel tank capacity, approx.||7.5 l (1.98 US gal) Super unleaded (ROZ 95/RON 95/PON 91)|
|Weight without fuel, approx.||102.6 kg (226.2 lb.)|
In the latest years, the KTM 250 SX-F has received many upgrades and most of them aimed the chassis and handling departments. KTM’s formula has proved countess times to be awning one and we are convinced that the 2014 model year has all it needs to keep the 250 SX-F ahead of the pack.