Revolutionary engine design • introduced in 2008, already a legend • optimal handling thanks to a 70° cylinder angle and crankshaft located close to the bike's centre of gravity • state-of-the-art engine management • excellent reliability • top-level performance • new for 2010: the FE 390 • 393.4 cc engine, smooth yet extremely powerful • maximum traction, even on the most difficult terrain • a dream to ride <typolist> SOHC single-cylinder engine 70° cylinder angle • 393.4 cc, 449.3 or 565.5 cc displacement • innovative, compact design • top performance • high reliability • the crankshaft is positioned near the overall centre of gravity • for optimum handling </typolist> <typolist> Shallow cylinder angle of 70° Lets the crankshaft be relocated more than 100 mm higher and approx. 160 mm towards the rear • rotating masses are centrally located near the vehicle’s centre of gravity • centralisation of the masses </typolist> <typolist> Oil Circuit Pressure pump • reliably supplies lubricating oil to all the essential components, such as the crankshaft, piston and valve-train • a suction pump carries excess oil out of the cylinder head and back to the transmission • a single oil filter • easy maintenance </typolist> <typolist> Cylinder & cylinder head An overhead camshaft activates the four valves (titanium inlet valves) via four light rocker arms and serves as a centrifuge for the engine ventilation • the FE 390 has a new camshaft and new pistons for an optimal, enduro-style performance • redesigned cam chain tensioner in all engines • guarantees more reliable chain tension • new oil control rings (390 & 450 cc) and new piston rings made of nitrided steel • for increased reliability </typolist> <typolist> Gearbox All engine versions have a 6-speed gearbox with reinforced gearwheels for gears 1, 2, 5 and 6. The gearbox in the FX 450 has modified gear shifting specially designed for use in cross country and motocross </typolist> <typolist> FE 390 New crankshaft (reduced stroke, increased inertia) • new, longer connecting rod (to balance the shorter stroke) • new piston (modified shape, reduced compression ratio) • new camshaft (special timing, optimised decompression springs) • new engine management (new mapping) </typolist>