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Helmet Size Charts



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HJC Helmet Size Conversion Chart
Size Centimeter Hat Size Inches
XXS 51 - 52 6 3/8 - 6 1/2 20 - 20 1/2
XS 53 - 54 6 5/8 - 6 3/4 20 7/8 - 21 1/4
S 55 - 56 6 7/8 - 7 21 5/8 - 22
M 57-58 7 1/8 - 7 1/4 22 1/2 - 22 7/8
L 59 - 60 7 3/8 - 7 1/2 23 1/4 - 23 5/8
XL 61 - 62 7 5/8 - 7 3/4 24 - 24 3/8
XXL 63 - 64 7 7/8 - 8 24 3/4 - 25 1/4
XXXL 65 - 66 8 1/8 - 8 1/4 25 5/8 - 26
Youth S 49 - 50 6 1/8 - 6 1/4 19 1/4 - 19 3/4
Youth M 51 - 52 6 3/8 - 6 1/2 20 - 20 1/2
Youth L 53 - 54 6 5/8 - 6 3/4 20 7/8 - 21 1/4
Youth S/M 49 - 50 6 1/8 - 6 1/4 19 1/4 - 19 3/4
Youth L/XL 51-52 6 3/8 - 6 1/2 20 - 20 1/2
Top
To measure your correct helmet size, measure the circumference of your head, like a headband, one inch above the eyebrows, above the ears. Match inch measurement to chart. If between sizes, choose the next larger size. Helmet should fit snugly but not overly tight.

SHOEI Helmet Size Conversion Chart
Size Centimeter Hat Size Inches
XXS 51 - 52 6 3/8 - 6 1/2 20 - 20 1/2
XS 53 - 54 6 5/8 - 6 3/4 20 7/8 - 21 1/4
S 55 - 56 6 7/8 - 7 21 5/8 - 22
M 57-58 7 1/8 - 7 1/4 22 1/2 - 22 7/8
L 59 - 60 7 3/8 - 7 1/2 23 1/4 - 23 5/8
XL 61 - 62 7 5/8 - 7 3/4 24 - 24 3/8
XXL 63 - 64 7 7/8 - 8 24 3/4 - 25 1/4
XXXL 65 - 66 8 1/8 - 8 1/4 25 5/8 - 26
Top
To measure your correct helmet size, measure the circumference of your head, like a headband, one inch above the eyebrows, above the ears. Match inch measurement to chart. If between sizes, choose the next larger size. Helmet should fit snugly but not overly tight.

SUOMY Helmet Size Conversion Chart
Size Centimeter Hat Size Inches
XS 53 - 54 6 5/8 - 6 3/4 20 7/8 - 21 1/4
S 55 - 56 6 7/8 - 7 21 5/8 - 22
M 57-58 7 1/8 - 7 1/4 22 1/2 - 22 7/8
L 59 - 60 7 3/8 - 7 1/2 23 1/4 - 23 5/8
XL 61 - 62 7 5/8 - 7 3/4 24 - 24 3/8
XXL 63 - 64 7 7/8 - 8 24 3/4 - 25 1/4
XXXL 65 - 66 8 1/8 - 8 1/4 25 5/8 - 26
Top
To measure your correct helmet size, measure the circumference of your head, like a headband, one inch above the eyebrows, above the ears. Match inch measurement to chart. If between sizes, choose the next larger size. Helmet should fit snugly but not overly tight.


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