Arai Helmet Size Chart
Description
One-piece, multi-density EPS line
Optimized from decades of research and development for maximum protection throughout the entire liner. Designed in concert with Arai’s proprietary outer shell, the multi-density EPS beads are molded into a single liner, maximizing energy absorption requirements as needed in each area of the helmet. This tuning maximizes impact energy absorption ability while maintaining a uniform and compact helmet.
Focus on protection
With a focus on protection, even our retro ¾ helmet gets our peripherally-belted (PB-cLc2 ) shell, providing tremendous strength in an incredibly small and lightweight package. Adding reinforcement where needed, without increased weight or shell thickness.
Ventilation
This smooth, retro helmet is actually fully ventilated: air enters via three intakes, ? ows over the head and exits through a multi-staged channel that leads to all-new Venturi exhaust ports.
Button closure goggle strap holder
Completing the old-school look is the faux-stitched leather goggle strap holder that helps keep your goggle straps from sliding up the helmet when riding.
Optimized from decades of research and development for maximum protection throughout the entire liner. Designed in concert with Arai’s proprietary outer shell, the multi-density EPS beads are molded into a single liner, maximizing energy absorption requirements as needed in each area of the helmet. This tuning maximizes impact energy absorption ability while maintaining a uniform and compact helmet.
Focus on protection
With a focus on protection, even our retro ¾ helmet gets our peripherally-belted (PB-cLc2 ) shell, providing tremendous strength in an incredibly small and lightweight package. Adding reinforcement where needed, without increased weight or shell thickness.
Ventilation
This smooth, retro helmet is actually fully ventilated: air enters via three intakes, ? ows over the head and exits through a multi-staged channel that leads to all-new Venturi exhaust ports.
Button closure goggle strap holder
Completing the old-school look is the faux-stitched leather goggle strap holder that helps keep your goggle straps from sliding up the helmet when riding.
Part Numbers and Availability
| Name | Part Number | Barcode | SKU | Stock |
| Black / XS | 685311177216 | 779421988883 | K-830781 | In stock |
| Black / S | 685311177223 | 779421988890 | K-830782 | In stock |
| Black / M | 685311192929 | 779422415579 | K-850493 | In stock |
| Black / L | 685311177247 | DD242639 | K-830784 | In stock |
| Black / XL | 685311192943 | 779422415593 | K-850495 | Available |
| Black / 2XL | 685311192950 | 779422415609 | K-850496 | Available |
| Black-Frost / XS | 685311193087 | 779422415616 | K-850501 | Available |
| Black-Frost / S | 685311193094 | 779422415623 | K-850502 | Available |
| Black-Frost / M | 685311193100 | 779422415630 | K-850503 | Available |
| Black-Frost / L | 685311193117 | 779422415647 | K-850504 | Available |
| Black-Frost / XL | 685311193124 | 779422415654 | K-850505 | In stock |
| Black-Frost / 2XL | 685311193131 | 779422415661 | K-850506 | Available |
| Copper Frost / XS | 685311192967 | 779422415678 | K-850511 | Available |
| Copper Frost / S | 685311176530 | 779421989019 | K-830802 | In stock |
| Copper Frost / M | 685311192981 | 779422415692 | K-850513 | Available |
| Copper Frost / L | 685311176554 | 779421989033 | K-830804 | Sold out |
| Copper Frost / XL | 685311193001 | 779422415722 | K-850515 | In stock |
| Copper Frost / 2XL | 685311193018 | 779422415739 | K-850516 | Available |
| Gun Metallic Frost / XS | 685311193148 | 779422415746 | K-850521 | Available |
| Gun Metallic Frost / S | 685311193155 | 779422415753 | K-850522 | Available |
| Gun Metallic Frost / M | 685311193162 | 779422415760 | K-850523 | In stock |
| Gun Metallic Frost / L | 685311193179 | 779422415777 | K-850524 | Available |
| Gun Metallic Frost / XL | 685311193186 | 779422415784 | K-850525 | In stock |
| Gun Metallic Frost / 2XL | 685311193193 | 779422415791 | K-850526 | Available |
| Modern Gray / XS | 685311193025 | 779422415807 | K-850531 | Available |
| Modern Gray / S | 685311193032 | 779422415814 | K-850532 | In stock |
| Modern Gray / M | 685311193049 | 779422415821 | K-850533 | Available |
| Modern Gray / L | 685311193056 | 779422415838 | K-850534 | Available |
| Modern Gray / XL | 685311193063 | 779422415845 | K-850535 | In stock |
| Modern Gray / 2XL | 685311193070 | 779422415852 | K-850536 | Available |
| White / XS | 685311192844 | 779421989187 | K-830831 | Available |
| White / S | 685311177162 | 779421989194 | K-830832 | In stock |
| White / M | 685311192868 | 779422415906 | K-850543 | Available |
| White / L | 685311192875 | 779422415913 | K-850544 | In stock |
| White / XL | 685311192882 | 779422415920 | K-850545 | In stock |
| White / 2XL | 685311192899 | 779422415937 | K-850546 | Sold out |
| Black Frost / XS | 685311176585 | 779421988944 | K-830791 | In stock |
| Black Frost / S | 685311176592 | DD242628 | K-830792 | In stock |
| Black Frost / L | 685311176615 | 779421988975 | K-830794 | In stock |
| Gunmetal Frost / S | 685311176653 | 779421989071 | K-830812 | In stock |
| Gunmetal Frost / L | 685311176677 | DD242638 | K-830814 | In stock |
| Gray / L | 685311177360 | 779421989156 | K-830824 | In stock |