HJC Helmet Sizing Chart

HELMET SIZE CONVENTION CHART

The size chart is only for reference. Always try the helmet on and follow this manual’s instructions for a proper fit.

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

RPHA SERIES, FG-JET, i71, i100, i90, i30, i20, i40, C10, C91, C80, V10, V60, V90, V31.

SIZE CENTIMETER HAT SIZE INCHES
3XS* 50-51 6 1/4 – 6 3/8 19 3/4 – 20 1/8
2XS** 52-53 6 1/2- 6 5/8 20 1/2 – 20 7/8
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

 *The C10 is the only helmet available in 3XS (youth size).
** The RPHA 1, RPHA 11 and C10 are the only helmets available in 2XS.

YOUTH SIZE

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 XL 55-56 6 7/8 – 7 21 5/8 – 22