From its unveiling in 1997, the MV Agusta F4S has caught bikers' imaginations like no machine since Ducati's 916. Both designs were penned by Massimo Tamburini. The styling and specification of the MV are unique. The deep red-and-silver gloss of the sleek bodywork cunningly combines smooth and angular shapes. The radical four-into-four exhaust terminates in a set of underseat silencers which give a glorious roar on the move. The F4's engine has the technical prowess to match its design. The cylinder head uses a distinctive radial valve design - the valve pairs are slightly splayed away from each other so the valve stems are at an angle. This allows a more efficient combustion chamber shape, but is difficult to manufacture.