2017 KTM 250 SX-F Factory Edition Base

2017 KTM 250 SX-F Factory Edition

The 250 SX-F Factory Edition, the lightest and best performing bike in its class, is the right choice for both amateur and professional riders. The combination of a powerful and torquey engine in a lightweight and agile chassis is key to its success. A 14.000 rpm redline, factory spec WP AER 48 forks, orange anodized triple clamps and sprocket, an FMF muffler, launch control and Excel rims: this small bore superstar based on the prestigious 250 SX-F has what it takes to take on the big guns. And take them out.

• ENGINE

The new 250 SX-F engine is based on the similar overall design of its predecessor, with some major refinements to make this power plant more compact and lighter, with the production of improved torque and power across the entire rpm range. Perhaps one of the most impressive benefits of the new design is a weight reduction of 1,1 kg, while still including the incredibly beneficial electric starter. The reworked engine guarantees an improved power curve over the entire rev range up to 14,000 rpm, which makes the new 250 SX-F a winner for both amateur and professional riders.

• ELECTRIC STARTER

The new 250 SX-F is fitted with an electric starter as standard, which a clear advantage in the heat of battle. A new starter motor made by Mitsuba (modified for easy disassembly) and a weight-reduced starter drive guarantees more efficient and reliable starting.

• TRANSMISSION

The new engine is fitted with an all-new and weight reduced, 5-speed gearbox. It features the same gear ratios as the previous model, but has wider gears that feature a special surface treatment on the 2nd, 3rd and 4th gears for improved reliability. One of the new and special features on the bike is an advanced "NO-DIRT" shift lever design, which prevents dirt from blocking the joint of the lever and guarantees safe shifting of the transmission.

• ENGINE MANAGEMENT SYSTEM

The completely reworked Keihin Engine Management System, with electronic fuel injection, features an all-new 44 mm throttle body, which provides instantaneous response and maximum performance thanks to a revolutionary injector position. The new ECU (Engine Control Unit) includes a launch control for more efficient starts with different maps according to the gear sensor selection. In addition, the rider can activate optional maps for a different power delivery via the map select switch on the handlebar.

• CRANKSHAFT

The new 250 SX-F's crankshaft features a stiffer design and employs a 6 mm shorter connecting rod, contributing to the compact and light engine with a snappy power delivery. A plain big end bearing features 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 250 cc engine. Not only that, it enhances the engine's durability, allowing long crankshaft service intervals.

• CLUTCH

The highly compact CSS clutch (Coil Spring Steel) features a weight reduced, wear-free steel basket, and now seven instead of eight clutch plates, which are extremely heat resistant due to their steel carrier discs. In addition, a reworked inner hub and a pressure plate guarantees a better oil supply along with even better cooling of the clutch. A smaller master cylinder diameter of the Brembo hydraulic clutch system provides lighter pull and precise modulation.