2015 Husqvarna® FC 250

The electronic fuel injection and 44mm throttle body of the Keihin Engine Management System on the 4-stroke models, combine to offer amazing power delivery and efficiency at all engine speeds. The injector was positioned on the bottom of the inlet tract for optimal air-fuel mixture, resulting in crisp throttle response and class-leading power.

Technologically advanced solutions in engine layout and components ensure explosive engine performance. The lightweight and compact DOHC 4-stroke engine has been designed to offer top performance without compromise. The large titanium valves (32.5mm intake and 26.5mm exhaust) weigh only 19.6g each on the intake side and 18g on the exhaust side.

The high revving 250cc engine demands high-tech and reliable engine components. The crankshaft features a plain big end bearing and force-fitted bearing shells, ensuring durability and long service intervals. The conrod and crankshaft are produced by industry leader Pankl to exacting standards. The piston is produced by König and has been designed for minimum weight to suit the high-revving, high output nature of the FC 250. The forged box-type piston weighs only 200g and combines high performance and reliability, and guarantees a compression ratio of 13.9:1 for maximum power output.

The engineers in Research and Development had clear objectives in terms of torsional rigidity, longitudinal stiffness and weight. The goal was to give the rider optimal feedback and complete confidence in every situation. This was achieved by designing the lightweight chromium molybdenum frame with precise longitudinal flex that helps absorb impacts from the rear wheel, working together with the suspension for better comfort and greater feedback. The torsional rigidity enhances turn-in, sharp handling and stability even on the roughest terrain, giving the rider complete confidence in finding his lines and increasing his pace lap after lap.

The lightweight polyamide rear subframe has been reinforced with an additional screw on the airbox side that improves the fitment between the left subframe arm and the airbox. The improved seal guarantees better performance and durability. The three-piece composite subframe, made of high strength polyamide with a precision injection moulded production process, has been designed to offer stiffness while flexing more than an aluminium subframe, complementing the flex characteristics of the frame in order to offer optimum rider feedback and feeling in all conditions.

The single component construction of the aluminium swingarm eliminates welding, providing more reliability, stability and safety, as well as superior quality and consistent behaviour over time compared to other construction processes.

The lightweight wheels are complemented by new Dunlop MX52 Motocross tyres that feature a new “block-within-a-block” design for more progressive cornering. The new Dunlop rubber has been developed to offer superior grip in a wider variety of terrain.