Hjc Helmets Size Charts

HJC helmets are designed to fit snug and secure when properly sized. For additional guidance, refer to our helmet sizing guide or contact our customer service team.

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i10, i30	C91	C10, CS-R3, F71, FG-17, FG-JET, i20, i71, i90, i91, i100, IS-5, RPHA Series, V10, V31
CL-17	CS-MX 2, C50, C70, C71, i50, i31, i80, i40N, F100	F70
DS-X1	i70	CS-5N, IS-Cruiser
Youth Helmet Size Chart

i10, i30

HJC street helmets designed for daily commuting and versatile road riding.

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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	8.75	27 1/4" - 27 5/8"

C91

HJC C91 modular motorcycle helmets designed for street and touring riding.

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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	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"
4XL	66 - 67	8 1/4 - 8 3/8	26" - 26 3/8"
5XL	68 - 69	8 1/2 - 8 3/4	26 3/4" - 27 1/4"

C10, CS-R3, F71, FG-17, FG-JET, i20, i71, i90, i91, i100, IS-5, RPHA Series, V10, V31

HJC street and sport motorcycle helmets spanning full-face, modular, and open-face designs.

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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"
4XL	66 - 67	8 1/4 - 8 3/8	26" - 26 3/8"
5XL	68 - 69	8 1/2 - 8 3/4	26 3/4" - 27 1/4"

CL-17

HJC CL-17 full-face motorcycle helmets designed for street riding and daily use.
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	8.75	27 1/4" - 27 5/8"

CS-MX 2, C50, C70, C71, i50, i31, i80, i40N, F100

HJC motorcycle helmets designed for street, touring, and off-road riding.

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Size	Centimeters	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 1/4 - 22 7/8
L	58-59	7 1/4 - 7 3/8	23 1/4 - 23 5/8
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 1/8 - 25 1/2
4XL	66-67	8 1/4 - 8 3/8	26 - 26 3/8
5XL	68-69	8 1/2 - 8 5/8	26 3/4 - 27 1/8

F70

HJC F70 full-face motorcycle helmets for street and sport riding.

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Size	Centimeters	Hat Size	Inches
2XS	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

DS-X1

HJC DS-X1 helmets designed for adventure touring and dual-sport riding.
Size	Helmet Size (cm)	Cheek Pad Size (mm)	Liner Size (mm)
XS	54-55	45	12
S	55-56	50	9
M	57-58	35	12
L	58-59	30	9
XL	60-61	30	12
2XL	62-63	25	7

i70

HJC i70 full-face helmets engineered for street and sport-touring riding.

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Size	Helmet Size (cm)	Cheek Pad Size (mm)	Liner Size (mm)
XS	53-54	40	15
S	55-56	35	12
M	57-58	30	12
L	59-60	30	18
XL	61-62	30	15
2XL	63-64	25	12

CS-5N, IS-Cruiser

HJC helmets for street and cruiser riding with everyday comfort and protection.

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Size	Centimeters	Hat Size	Inches
XS	54-55	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	58-59	7 3/8 - 7 1/2	23 1/4 - 23 5/8
XL	60-61	7 5/8 - 7 3/4	24 - 24 3/8
2XL	62-63	7 7/8 - 8	24 3/4 - 25 1/4

Youth Helmet Size Chart

HJC youth motorcycle helmets designed for street and sport riding.

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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.