2014 KTM 250 SX: POWER UP
UNRIVALLED HANDLING
WHEELS
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.
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.
TOP PERFORMANCE
CLUTCH
A new DDS clutch (Damped Diaphragm Steel) with a wear-free steel cage is fitted to the new KTM 250 SX engine, allowing use of thin steel discs for minimum overall width. The diaphragm spring, which preloads the package, not only reduces the operating force required to pull the clutch, but also provides space for integrated hub damping. The result: more traction and protection for the transmission. And with updated hydraulic clutch actuation from Brembo, the rider has everything under control right from the start.
ENGINE
In 2014, the 250 SX engine has been improved with a redesigned reed valve housing featuring Boyesen high-performance reeds for better responsiveness. A revised carburetor setting and ignition curve also allow for increased performance.
CYLINDER HEAD
The 250 SX has a new cylinder head with optimized combustion chamber. The benefit is more efficient combustion for better response and increased torque over the entire load and engine speed range. A new CDI box with optimized ignition mapping has been fitted for more effective combustion for better power delivery and optimum rideability.
SUPERIOR CHASSIS
TRIPLE CLAMPS
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.
SWINGARM
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.
SUSPENSION/DAMPING
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.
FRAME
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.
TOP ERGONOMICS
AIR BOX
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.
SEAT
Ergonomically perfect, the seat has received an improved foam core, ensuring greater comfort and durability.
BODYWORK
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.
FUEL TANK
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.
GRAPHICS
New classy graphics with clear lines visually underscore the exacting standards of what KTM deems a true, cutting-edge motocross bike.
HANDLEBAR
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 250 SX is considered to be the motocross bike with the best power-to-weight ratio. The lightweight 2-stroke engine scores with unrivaled performance, wrapped into an extremely lightweight chassis - a serious competitor for the more complex 4-stroke contenders.
TECHNICAL DETAILS
ENGINE
| Design | 1-cylinder 2-stroke engine, water-cooled, with reed intake and exhaust control |
|---|---|
| Displacement | 249 cm³ (15.19 cu in) |
| Bore | 66.4 mm (2.614 in) |
| Stroke | 72 mm (2.83 in) |
| Starting aid | Kick starter |
| Gearbox | 5-gear, claw shifted |
| Primary transmission | 26:72 |
| Secondary ratio | 13:48 |
| Clutch | Multidisc clutch in oil bath/hydraulically activated |
| Ignition | Contactless controlled fully electronic ignition with digital ignition adjustment, type Kokusan |
CHASSIS
| 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 | 385 mm (15.16 in) |
| Seat height unloaded | 992 mm (39.06 in) |
| Total fuel tank capacity, approx. |
7.5 l (1.98 US gal) Super unleaded gasoline (95 octane), mixed with 2-stroke engine oil (1:60) |
| Weight without fuel, approx. | 96.3 kg (212.3 lb.) |
