The Simpson Rally Sport is the brand's latest open-face helmet release. Features an adjustable visor that provides sun protection, factory-installed HANS clip system and FIA 8859-2015 certification.
| Head measurement | Size |
| 52 - 54 cm | XS |
| 54 - 56 cm | s |
| 56 - 58 cm | M |
| 58 - 60 cm | L |
| 60-62cm | XL |
| 62-65.5cm | XXL |
HOW TO TAKE MEASUREMENTS?Find the ideal size of your helmet in a very simple way. The circumference of the head should be measured two centimeters above the eyebrows and in the area that results in the largest possible perimeter. |