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The 250 SX-F has been the benchmark in the MX2 world championship for years; she has also won five world championship titles in a row at the Mattighofen firm. The latest is Jeffrey Herlings’ 2012 world champion title with the 250 SX-F. He will therefore naturally renew his confidence in the best motorcycle on the market for the 2013 season. For 2014, this spirited four-stroke comes with improvements to the engine and chassis; a concentrate of performance that will certainly continue to dominate the MX2 category.
FRAMEWORK
The modern frame design of the SX models made of lightweight, high-strength chrome-molybdenum steel profile tubes combines maximum longitudinal stiffness with optimum torsional rigidity. This not only offers good handling behavior and precise steering, but also excellent driving stability..
SWINGING ARM
The cast aluminum swingarm was designed using state-of-the-art calculation and simulation software; the design and the thickness of the walls ensure a minimum weight for an optimal robustness and a perfectly defined flex. For the 2014 model year, engineers have improved the chain guide and its attachment points on the swingarm for improved reliability and reduced weight.
SUSPENSION / AMORTIZATION
Both the rear shock absorber and the 48mm inverted fork from WP Suspension ensure optimum handling for damping and responsiveness. In the 2014 model year, the telescopic fork shines with optimized adjustment and greater impact reserves. The rebound and compression of the fork can quickly be adjusted to the needs of the rider and the track. The rear shock absorber also allows High-Speed and Low-Speed adjustment of the compression damping.
FORK TIES
High-quality CNC-milled triple trees have been standard at KTM for years. They ensure precise handling and clearly emphasize the flex characteristics and therefore the responsiveness of the telescopic fork..
EXHAUST
FIM noise limits are a huge challenge for motocross manufacturers, and KTM goes to great lengths to meet them. The 2014 250 SX-F is also equipped with hydroformed parts and an additional resonance chamber (Header Resonator System HRS) to provide greater torque while reducing noise..
MOTOR
The 250 SX-F is your best ally for the podiums in hotly contested motocross competitions; this is among other things proven by the numerous titles of world champions. For the 2014 model year, KTM engineers among other things fitted the engine with a lighter gearbox with five speeds instead of six. The combination of compact engine design and unbeatable power once again make the 250 SX-F a future contender for victories.
STARTER
The 250 SX-F’s engine is fitted with an electric starter as standard. It represents an undisputed advantage in the heat of the race of contested races, even if it results in a slight increase in weight. 2014 Model Year Welcomes New Stronger Starter Freewheel.
COOLING
The proven KTM integrated cooling system guides the coolant from the cylinder head through the triangle frame to the WP aluminum radiator. The reduction in the number of hoses facilitates the installation of the radiator and improves the passage of air under the tank.
CYLINDER HEAD
The heart of the compact DOHC engine is the ultra-modern cylinder head with dual overhead camshafts and DLC-coated rocker arms: a design that achieves speeds of 14,000 rpm. Flow-optimized channels and ultra-light titanium valves (32.5mm intake, 26.5mm exhaust) ensure maximum gas flow and top performance.
PISTONS
The forged pistons in Box-in-Box construction shine with their super sturdy structure while keeping weight to a minimum. Thanks to the low moving masses, the engine has particularly dynamic characteristics..
EMBELLISHMENT
The crankshaft of the 250 SX-F is fitted with a sliding bearing in the lower connecting rod eye. Two pressed bearings are directly connected to the crank pin of the crankshaft. This construction is a prerequisite for the very high revs and unbeatable top performance of the 250cc engine. This also benefits the durability of the engine and thus allows longer service intervals for the crankshaft: saving time and money for the customer..
BALANCING SHAFT
To balance the masses, the engine of the 250 SX-F incorporates a multifunction balancer shaft which simultaneously drives the timing chain and the water pump. For the 2014 model year, the engine is fitted with a new water pump cover with new gasket in order to optimize the seal..
GEARBOX
The 2014 model year engine of the 250 SX-F features a new, highly precise and easy-to-shift gearbox. As the number of gears has been reduced from six to five, the new gearbox gains 250 grams compared to that of last year..
CLUTCH
The very compact CSS (Coil Spring Steel) clutch includes a wear-resistant steel housing and eight highly heat-resistant lined discs thanks to their steel material. Brembo’s hydraulically operated clutch with new clutch housing guarantees easy and easily controllable modulation.
ENGINE MANAGEMENT SYSTEM (EMS)
Keihin’s Engine Management System with electronic fuel injection, 44mm throttles, as well as the revolutionary injector position developed by KTM, ensure spontaneous reaction and maximum engine performance. The 250 SX-F’s wire harness has been further simplified for the 2014 model year and the quality of cables and connectors improved. Many connectors are now protected against pressurized steam jets with new rubber grommets. The Map-Select-Switch available in the PowerPart catalog also allows different motor characteristics to be selected via the EMS. In addition, an optional User-Setting-Tool allows the use of a laptop computer to access motorcycle data and modify the ignition and fuel injection mapping in just a few clicks..
WHEELS
At the wheels, lightweight CNC machined hubs along with premium Excel rims and black coated spokes with lightweight aluminum nipples ensure minimal weight for maximum stability. Pirelli Scorpion MX Mid Soft 32 tires shine with perfect grip and excellent performance.
BRAKES
High-tech Brembo brakes have long been standard on KTM off-road motorcycles with lightweight wave disc brakes for optimum braking performance. For the 2014 model year, there is a new brake housing with a new compensation reservoir, a smaller piston diameter, and a new lever with optimized kinematics. Thanks to this and the optimized brake pads, the performance and dosability of the front brake have been further improved significantly..
FAIRING
The aim was to create a more ergonomic and functional fairing, so that the whole bike in every detail is in perfect harmony with the rider. The molded plastic parts of the front mudguard are a model of solidity thanks to their sophisticated structure and attachment.
SADDLE
The perfectly ergonomic 2014 model year saddle contains an improved foam core that provides greater comfort and sturdiness.
AIR BOX
The airbox design guarantees optimum protection of the air filter against dirt, and maximum airflow for increased performance. Changing the Twin Air air filter in seconds and without tools has long been standard at KTM.
TANK
All models in the SX range are equipped with a new 7.5 liter lightweight polyethylene tank; it has been modified at the level of the internal thread of the cover and the cover itself, which closes more easily and with great reliability. The four-stroke motocross features the same fuel pump system as the four-stroke enduro models, which allows the optional installation of larger tanks available in the PowerParts catalog or on the enduro models..
HANDLEBAR
All SX models are fitted with a super strong Renthal Fatbar 827 tapered handlebar, the shape of which has been adapted to the demands of motocross. The proven KTM system allows the handlebars to be fixed in four different positions. In 2014, a large black / silver Renthal Crash Pad provides the rider with additional impact protection.
GRAPHICS
A new refined graphic design with clear lines underlines the uncompromising demand of this modern off-road motorcycle.
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250 SX-F 2013
Model marketed in
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2020
The technical aspect
2014 KTM 250 SX-F
- Frame
- Frame: Central tubular frame in chrome-molybdenum steel
- Tank: 7.5 liters
- Seat height: 992 mm
- Wheelbase: 1495 mm
- Dry weight: 102 kg
- Train before
- WP inverted telehydraulic fork Ø 48 mm, deb: 300 mm
- 1 disc Ø 260 mm, 2 piston caliper
- Front wheel:
80/100
– 21
- Transmission
- 5-speed gearbox
- Secondary chain transmission
- Rear axle
- WP mono-shock, deb: 330 mm
- 1 disc Ø 220 mm, 1 piston caliper
- Rear wheel:
100/90
– 19
- Motor
- Single cylinder
in line
, 4 stroke - Cooling: by water
- Injection Ø 44 mm
- 2 ACT
- 4 valves
-
249.91 cc
(78 x 52.3 mm) -
≈ 40
ch - Weight ratio /
power
: 2.55
kg / hp - Compression: 13.9: 1
- Crit’air:
Detached pieces
exhaust
motor
fluid
electricity
filtration
braking
chain kit
Competitors
2014 Honda CRF 250 R
Yamaha YZ 250 F 2014
Kawasaki KX 250 F 2014
Suzuki RM-Z 250 2014
Gallery
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