The new X-551 is a composite fiber helmet designed for users of the type of bike motard and enduro. Every detail was in fact designed to use a "crossover" of the bike: the finest materials for the layers of the shell, very comfortable for technical textiles in the interior, internal VPS sunscreen, Pre-set to the communication system N -Com ® X-Series. Its sleek lines but "muscular" is made even more attractive by the visor (perfectly combined with the design of the product), the wide peak, from the ventilation system complete and functional. The visor provides adequate protection from the sun, is also a guarantee of safety when using helmet on unpaved roads. X-551 can be used in its full complement, without or without a peak or visor. 01 - TRIPLE SHELL X-551 has three different outer shell sizes for the six sizes available. 02 - FAN The innovative ventilation system and includes a wide air intake system in the chin area which makes it even more effective anti-fog NFR FSB which is fitted as standard with the new X-551. The air circulation inside the helmet is also assured of the frontal air intake and two air intakes above that, with rear extractor ensure a constant supply of fresh air into the helmet, even in extreme conditions.