Arai Quantum-X Full-Face Helmet — Diamond Black (2XL)

The Arai Quantum-X is a round-oval street full-face built for riders whose heads are slightly wider than they are long, with Arai's smooth VAS shell and a quiet, comfortable interior.

Key details: full-face helmet, round-oval fit, PB-SCLC (Peripherally Belted Super Complex Laminate) shell, VAS-Max Vision shield with Pinlock® 120 MaxVision™ insert included.

Why riders pick it:

• Variable Axis System (VAS) lowers the visor pivot by about 24 mm for a smoother temple area that helps the shell glance off impacts.
• Larger VAS latch with de-mist position holds the shield securely closed.
• QVF 3-position intake and QVR exhaust ducts; side vents keep exhausting even when the top intake is closed.
• FCS® cheek pads cradle the face, ease on and off, and help block wind noise.
• Water-repellent ES chin cover installed to smooth airflow and cut noise from below.

Not sure on size? Measure the circumference of your head just above the ears and check Arai's size chart — message us if you're between sizes and we'll help.