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MV Agusta – F4 RR - Web Exclusive

The RR acronym immediately brings to mind the world of competition, and MV Agusta has produced a bike for individuals who demand the most exhilarating riding experience.

May 13, 2011

Created using the most exotic materials, ultra-sophisticated suspension and the new 1000cc short-stroke engine, the MV Agusta F4 RR is claimed to be the most advanced and powerful superbike in the world.

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Evolved, exotic, and even further refined, the F4 RR is currently the best that technology can offer to the motorcycling world. The already refined MV Agusta F4 is given more exotic materials to reduce weight and, above all, a 201hp four-cylinder engine to make the F4 RR the most powerful superbike ever built.

The new four-cylinder short-stroke engine with radial valve is the soul of the MV Agusta F4 RR. The engine is completely new and inspired by MV Agusta’s experience in competition.

Apart from the engine case castings, the arrangement of cylinders and a few other elements, the RR engine shares little with that of the previous F4. It has been completely redesigned with a single goal in mind: maximum performance. All new thermodynamics, a new crankshaft that has a reduced value of inertia and new bore and stroke dimensions with an extremely over-square relationship to reach rpm’s worthy of a racing motorcycle.

The piston diameter has been increased from 76 to 79mm, while the stroke is reduced from 55 to 50.9mm. With these dimensions the rev limit has been raised to a stratospheric 13,700rpm, while at the same time reducing the linear velocity of the piston (from 24.7m/s to 22.9m/s), and thus also improving reliability.

To reach of 201hp at 13,400rpm with a completely homologated engine including an exhaust system with catalytic converter, attention was given to every detail. The thermodynamic efficiency has been optimized to guarantee a record level of performance. For this reason, the head of the F4 RR is completely new, including new intake and exhaust tracts as well as large diameter intake and exhaust valves. For the first time on an MV mass production engine, all the valves are made of titanium to reduce the mass while at the same time significantly increasing the diameter (30 to 31.8mm for the inlet and from 25 to 26mm for the exhaust). The tuning of the engine has been optimized thanks to the use of a completely new 4-2-1-4 exhaust system with large diameter tapered headers. This new exhaust system has a unique sound and is even more intoxicating.

The intake is controlled by four 49mm throttle bodies with the unique TSS system of variable-length intake tracts. The new engine of the F4 RR has been designed for low friction. A new primary drive gear has drastically reduced the speed of the generator and water pump to limit the parasitic power consumption of these components. As with previous F4s, this new engine features a rapidly removable cassette gearbox and the clutch employs a mechanical slipper system.

The electronic engine management has been further refined compared to that of the previous F4. The traction control follows new operating modes as well as two maps for the engine, and everything is now easily managed through the new controls that have been placed on the left handlebar.

The frame and swingarm are common with those of the F4, but to optimize performance and adapt the F4 RR to all race tracks and conditions, the F4 RR allows virtually infinite adjustments. It’s combined with an adjustable steering head angle (with interchangeable eccentrics), while the height of the swing arm pivot and rear axle can be altered by means of calibrated inserts.

Eurp 1106 02+mv agusta f4 rr+white.JPG Photo 3/3   |   MV Agusta – F4 RR - Web Exclusive

The Öhlins NIX upside-down front fork has a 43mm diameter inner tube and a titanium nitride coating to improve operation. This fork dimension has been designed to achieve the perfect balance of agility without sacrificing stability. The front wheel axle carriers are machined from billet aluminum and the front forks offer precise external adjustment of spring preload as well as compression and rebound damping. Also, the fork of the F4 RR provides separate adjustments for the hydraulic damping (left leg compression, right leg extension).

The Öhlins Racing TTX 36 rear shock is simply the best in the world. Born from experience in competition, it is externally adjustable in spring preload, compression, rebound and length allowing you to vary the ride height of the rear of the bike to match the different driving styles and different circuits.

The quest for lighter weight and the best handling led to the creation of lightweight forged aluminum wheels to minimize unsprung weight and reduce inertia. The new wheels save 1kg (2.2 lb) compared to the standard F4 cast versions.

Brembo monobloc calipers are state of the art for motorcycles and are paired with Brembo radial master cylinders. The clutch master cylinder is the mirror image of the radial brake caliper, which offers increased feel and modulation. Numerous other exclusive details, such as the levers and handlebars were subjected to countless hours of testing and development.

A true superbike is not only defined by its performance, but also by the attention to detail. The F4 RR debuts new adjustable lightweight rearsets to match the ergonomics of the bike to the needs of the rider.

Remote control of the dashboard functions (including traction control) is just one of the details that the MV engineers have put into this new superbike. In addition, a new aerodynamic flap has been added under the lower triple clamp to convey additional air to the radiator, optimizing the aerodynamics and cooling of the engine’s power.

The two new colors, pastel red/white and matte pearl white, together with the new graphics make the F4 RR even more unique.



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