HJC Size Chart

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HJC Helmets Size Chart

Helmet Size Convention Chart
Size Centimeters 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
2XL 63 - 64 7 7/8 - 8 24 3/4 - 25 1/4
3XL 65 - 66 8 1/8 - 8 1/4 25 3/8 - 26
4XL 67 - 68 8 3/8 - 8 1/2 26 3/8 - 26 3/4
5XL 69 - 70 8 3/4 27 1/4 - 27 5/8
RPHA Series, i20, i30, i71, i90, i100, C10, C91, FG-17, FG-JET, CS-R3, IS-5, F71, V10, V31
Size Centimeters Hat Size Inches
XS 54 - 55 6 3/4 - 6 7/8 21 1/4 - 21 5/8
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 58 - 59 7 1/4 - 7 3/8 22 7/8 - 23 1/4
XL 60 - 61 7 1/2 - 7 5/8 23 5/8 - 24
2XL 62 - 63 7 3/4 - 7 7/8 24 3/8 - 24 3/4
3XL 64 - 65 8 - 8 1/8 25 1/4 - 25 5/8
CL-17
Size Centimeters Hat Size Inches
XS 54 - 55 6 3/4 - 6 7/8 21 1/4 - 21 5/8
S 55 - 56 7 - 7 1/8 22 - 22 1/2
M 57 - 58 7 1/4 - 7 3/8 22 7/8 - 23 1/4
L 59 - 60 7 1/2 - 7 5/8 23 5/8 - 24
XL 61 - 62 7 3/4 - 7 7/8 24 3/8 - 24 3/4
2XL 63 - 64 8 - 8 1/8 25 1/4 - 25 5/8
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 27 1/4 - 27 5/8
Youth Helmet Size Chart
Size Centimeters Hat Size Inches
S 49 - 50 6 1/8 - 6 1/4 19 1/4 - 19 3/4
M 51 - 52 6 3/8 - 6 1/2 20 - 20 1/2
L 53 - 54 6 5/8 - 6 3/4 20 7/8 - 21 1/4
XL 55 - 56 6 7/8 - 7 21 5/8 - 22

Sizing information is provided by the manufacturer and does not guarantee a perfect fit. Please use this chart as a guide only.