HJC Helmets Sizing 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 1/4 – 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
2XL 63-64 7 7/8 – 8 24 3/4 – 25 1/4
3XL 65-66 8 1/8 – 8 1/4 25 5/8 – 26
4XL 67-68 8 3/8 – 8 1/2 26 3/8 – 26 3/4
5XL 69-70 8 3/4 – 8 3/4 27 1/4 – 27 5/8

 

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