Arai Helmets - Quantum-X Helmet - Pearl Black ST3/ST4 featuring a special highly convex

featuring a special highly convex glass

while providing you with a perfectly positioned

allowing for mounting in under a minute and removal in seconds

which maintains an ideal temperature for maximum concentration even at high speeds

4 x Lashing straps

Arai Helmets - Quantum-X Helmet - Pearl Black ST3/ST4 featuring a special highly convexRound oval shape, achieved by using an interior head liner that combines thicker front and rear pads with thinner side pads, is designed for riders whos heads are slightly wider rather than elongated Improved Glance Off Ability Variable Axis System (VAS) shield system lowers the pivot point by an average of 24 mm, making the shell surface area in the critical temple area much smoother and better able to reduce impact energy getting into the helmet