Helmet Sizing Chart

Motorcycle Helmet Sizing Chart
Adult SizeCM
Hat Size
Inches
XXSmall51-526 3/8 - 6 1/220 - 20.5
XSmall53-546 5/8 - 6 3/420.87 - 21.26
Small55-566 7/8 - 721.65 - 22.05
Medium57-58
7 1/8 - 7 1/422.44 -22.83
Large59-607 3/8 - 7 1/223.23 - 23.62
XLarge61-627 5/8 - 7 3/424.02 - 24.41
2XLarge63-647 7/8 - 824.80 - 25.20
3XLarge65-668 1/8 - 8 1/425.60 - 26.00
4XLarge67-688 3/8 - 8 1/226.40 - 26.80
5XLarge
69-708 5/8 - 8 3/427 - 27.50

Youth Helmet Sizing Chart
Youth SizeCM
Inches
Small49 - 5019.15 - 19.50
Medium51 - 5220.10 - 20.45
Large53 -54
20.87 - 21.26