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When good enough isn't good enough, there are Arai XD4 helmets. Every feature of these hand-built helmets works to provide you, the rider, with proper fit, comfort, and stability, no matter what your form of motorcycling is. Arai XD4 helmets have fiberglass-based shell construction that performs its job well--impact energy management--and works with the one-piece, energy-absorbing EPS liner. The shell shape has better aerodynamic stability at higher street speeds and works with the redesigned ventilation system--larger sculpted side cowl vents, exhaust ports added to the top diffuser, a chin vent design with more intake ports, and their trademarked brow vents--to efficiently flow more air. XD4's redesigned peak works with the shield, allowing it to operate fully beneath the peak without protruding. The shield stays low when raised so that the peak can be mounted lower for better aerodynamics and appearance. Inside, the Dry-Cool headliner offers microfitting 5mm peel-away temple pads that work with the Arai FCS cheek pad design, also with peel-away micro features, to create an impressive and satisfying custom fit with easy-on and off features. Plus, XD4 helmets are equipped with an emergency cheek pad release system that allows for easier access should you be injured. When your helmet is put to the test, "good enough" isn't enough. XD4 helmets from Arai are the best made better.
Some parts are not legal for sale or use in California on any pollution-controlled motor vehicles