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HJC

 Helmet Size Chart

 

Adult Helmets
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 Helmets
Size Centimeter Hat Size Inches
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