HJC Helmets Sizing Chart - Street Bike Parts

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HJC Helmets 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 1/2 – 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 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

 

RPHA Series, FG-Jet, FG-17 Helmet Size Chart (Only FG-17 is available up to size 3XL)

SIZE                                      CENTIMETER                                           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 & CL-17 Plus

SIZE                               CENTIMETER                                    HAT SIZE                                       INCHES                                           
XS 54 – 55 6 3/4 – 6 7/8 21 1/4 – 21 5/8
S 56 – 57 7 – 7 1/8 22 – 22 1/2
M 58 – 59 7 1/4 – 7 3/8 22 7/8 – 23 1/4
L 60 – 61 7 1/2 – 7 5/8 23 5/8 – 24
XL 62 -63 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 – 8 3/4 27 1/4 – 27 5/8
 

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 S/M 49 – 50 6 1/8 – 6 1/4 19 1/4 – 19 3/4
YOUTH L/XL 6 3/8 – 6 1/2 6 3/8 – 6 1/2 20 – 20 1/2

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