Being named as the most advanced and powerful superbike in the world is not an easy feat. The MV Agusta F4 RR is what consumers ask for when they want the most exciting riding experience. It was built with the most exotic components, an ultra-sophisticated suspension and the new 1000cc short-stroke engine.
But what’s regarded as the MV Agusta F4 RR’s soul is the new 4-cylinder short stroke engine with radial valve. This engine is totally new and is inspired by MV Agusta’s competitive experience. Aside from the engine case castings, the 4 cylinder RR engine’s arrangement of cylinders and some other elements are considerably different from the previous F4.
The redesign had mainly intended to maximize the performance. It features all new thermodynamics, a new crankshaft that has a lessened value of inertia, and new bore and stroke dimensions that have an excessively over-square relationship that can achieve rpm’s of a true racing motorcycle.
The piston diameter was raised from 76 to 79 mm while the stroke is lowered from 55 mm to 50.9 mm. With these dimensions, the rpm limit has been raised to an amazing 13,700 rpm.
At the same time, it reduces the linear velocity of the piston (from 24.7 m/s to 22.9 m/s) and thus enhances reliability. The utmost attention was given to each detail. To get to the level of 201 hp at 13,400 rpm, it has been fitted with a totally homologated engine including an exhaust system with the catalytic converter.
The thermodynamic efficiency was optimized to ensure a record level of performance. It is because of this that the head of the F4 RR is entirely new including new intake and exhaust tracts plus large diameter intake and exhaust valves.
It’s the first time that all the valves of the MV mass production engine are made of titanium. It has made it possible to decrease the mass while at the same time considerably raising the diameter -- 30 to 31.8 mm for the inlet and from 25 to 26 mm for the exhaust.