An advanced four-cylinder ‘short-stroke’ engine powers the entire F4 range. Piston diameters of 79 mm are combined with a stroke of 50.9 mm. On the F4 RR the peak rev limit has been raised to 14,000 rpm. Assembly is now marked by an even greater degree of expert craftsmanship to give absolute precision, with all components being selected and measured to ensure perfect uniformity and maximum performance: a procedure unique to MV Agusta. The engine timing system has been given an extensive upgrade: the intake and exhaust valves now use a single spring instead of the two seen on the previous model, thus reducing moving mass and boosting both maximum engine revs and the rev variation rate. The piston blanks are hard-anodized, making them even more durable and reliable. The con rods on the F4 RR are made of titanium, a solution more akin to a GP racer than a production machine, giving improved strength and lightness; the engine also features a rebalanced crankshaft. The oil circuit has been redesigned, both inside and outside the crankcase, ensuring perfect main bearing and con rod lubrication and thus boosting reliability, even under extreme conditions. Moreover, the engine now runs at lower temperatures thanks to enhanced radiator efficiency and redesigned oil routing. The short-stroke inline four-cylinder engine is available in two power configurations: on the F4 it reaches 195 hp, while the F4 RR puts out a jaw-dropping 200.8 hp. The fuel delivery system features 50 mm diameter throttle bodies with a fully revised variable length intake tract (TSS). The gearbox is - as on all MV Agusta four-cylinder engines - a six-speed unit, with the clutch featuring a mechanical slipper device. Four engine maps are available: three default one plus a fourth that can be customized by the rider.