The X551 from the X-Lite range of Nolan helmets replaced the popular N70 adventure helmet.  Every detail has been designed for a 'crossover' use - road/off-road.  It is made from composite fibre in three different shell sizes for the perfect fit.  The innovative ventilation system includes a wide air intake in the chin, two upper air intakes and a rear extractor guaranteeing a constant airflow.  It comes with an internal sun visor, removable/washable interior and is ready for the N-Com X series communication system.  The X551 can be used without the adjustable peak and/or visor.