Black chassis
The single piece chrome-moly steel alloy chassis of the WR250 2012 version is now black as opposed to white, but the technical features remain unchanged. The light alloy swingarm is attached to the Sachs monoshock by progressive linkage, while the front suspension has the same Kayaba forks, fully hydraulically adjustable, as used on other Husqvarna enduro racing models. The brakes are Brembo, large diameter (260 mm) daisy wheel discs Braking in the front, controlled by twin piston floating calipers, while in the rear only the WR250 comes fitted with a solid disc, without apertures, often preferred by professional riders for greater control and life expectancy of brake pads, especially over muddy terrain.
The two-stroke 250 cc school of thought
Two-stroke engines typically have a less linear power delivery than big four stroke single cylinder engines, but they can deliver emotions that for many fans are found nowhere else. Husqvarna technicians, after many years of continuous development, have transformed aggressiveness into effectiveness. This is thanks to fine tuning of the thermodynamics, the cylinder, exhaust expansion chamber, and the adoption as standard issue of the parts specially tested by the CH racing team. The Mikuni TMX38 carburettor, V-Force reed valve, Ducati Energy digital ignition, calibration of the exhaust valve and the drive shaft with the right compromise between inertia and reactivity.
The work in progress is an evolution that aims to make the WR250 engine perfectly balanced between easy control and explosive performance, much appreciated in the more extreme enduro trials, where only five gears are needed to tackle every terrain. The advantage of the two-stroke’s lightness and manoeuvrability.