The Stilo ST5 GT Carbon Zero helmet is an iconic helmet used in a variety of race types. Crafted from a high-tensile carbon fiber layup and exceeding the FIA 8860 rating, this helmet is our lights ST5 GT helmet and features an array of improvements from the ST4 Helmet Line and approved for a variety of top motorsports worldwide. Weighing in at 2.82lbs in the small shell size and 3.26lbs in the large this helmet not only looks good but will minimize neck and head strain. The ST5 GT helmet most notably includes side ports on either side of the helmet which allow drivers to customize their helmet with an array of accessories. These accessories include an array of electronic integrated communication systems, as well as drink & air systems. The ST5 also builds upon our ST4 design with a larger eye port which opens past the line of sight and includes an 3mm clear visor coming standard with our anti-fog coating. Improvements also have been made to the interior design with removable cheek & top pads allowing drivers to obtain the perfect fit. Helmets come standard with removable earmuff cushions which provide a significantly quieter environment for the driver by isolating the ear. Other Features: All Stilo closed faced helmets come in two separate shell sizes allowing us to craft a better fitting helmet that is lighter weight. Ready for integrated electronics, air supply, and hydration or any combination of the three this helmet is the most customizable helmet on the market, and all options integrate seamlessly with the ST5. Hans posts included Additional accessories available such as aero, top air kits, and an array of visor options.