HJC Sizing Chart

Adult Helmets (Not RPHA or FG-17 Series)

* With tape measure level, measure the widest point of your head, approximately 1" above your eyebrows.

Helmet Size Hat Size Inch Centimeter
XS 6 5/8 - 6 3/4 20 7/8 - 21 1/4 53 - 54
S 6 7/8 - 7 21 5/8 - 22 55 - 56
M 7 1/8 - 7 1/4 22 1/2 - 22 7/8 57 - 58
L 7 3/8 - 7 1/2 23 1/4 - 23 5/8 59 - 60
XL 7 5/8 - 7 3/4 24 - 24 3/8 61 - 62
2XL 7 7/8 - 8 24 3/4 - 25 1/4 63 - 64
3XL 8 1/8 - 8 1/4 25 5/8 - 26 65 - 66
4XL 8 3/8 - 8 1/2 26 3/8 - 26 3/4 67 - 68
5XL 8 3/4 - 8 5/8 27 1/4 - 27 5/8 69 - 70

FG-17 Series Helmets

* With tape measure level, measure the widest point of your head, approximately 1" above your eyebrows.

Helmet Size Hat Size Inch Centimeter
XS 6 3/4 - 6 7/8 21 1/4 - 21 5/8 54 - 55
S 6 7/8 - 7 21 5/8 - 22 55 - 56
M 7 1/8 - 7 1/4 22 1/2 - 22 7/8 57 - 58
L 7 1/4 - 7 3/8 22 7/8 - 23 1/4 58 - 59
XL 7 1/2 - 7 5/8 23 5/8 - 24 60 - 61
2XL 7 3/4 - 7 7/8 24 3/8 - 24 3/4 62 - 63
3XL 8 - 8 1/8 25 1/4 - 25 5/8 64 - 65

RPHA Series Helmets

* With tape measure level, measure the widest point of your head, approximately 1" above your eyebrows.

Helmet Size Hat Size Inch Centimeter
XS 6 3/4 - 6 7/8 21 1/4 - 21 5/8 54 - 55
S 6 7/8 - 7 21 5/8 - 22 55 - 56
M 7 1/8 - 7 1/4 22 1/2 - 22 7/8 57 - 58
L 7 1/4 - 7 3/8 22 7/8 - 23 1/4 58 - 59
XL 7 1/2 - 7 5/8 23 5/8 - 24 60 - 61
2XL 7 3/4 - 7 7/8 24 3/8 - 24 3/4 62 - 63

Youth Helmets

* With tape measure level, measure the widest point of your head, approximately 1" above your eyebrows.

Helmet Size Hat Size Inch Centimeter
Y-S 6 1/8 - 6 1/4 19 1/4 - 19 3/4 49 - 50
Y-M 6 3/8 - 6 1/2 20 - 20 1/2 51 - 52
Y-L 6 5/8 - 6 3/4 20 7/8 - 21 1/4 53 - 54
Y-XL 6 7/8 - 7 21 5/8 - 22 55 - 56