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Helmet Size Charts

HELMET SIZING CHART

In order for a helmet to protect properly and be the most comfortable, it must be sized to your head correctly. The best way to check sizing is to put the helmet on and see that the helmet feels snug equally all around your head. The helmet should not feel too tight or too loose at any particular point around your head.

Use the following charts to find the approximate size helmet for your head. Please remember that all head shapes are slightly different and the sizing chart is to be used as a starting guide to fit the correct helmet size to your head. Measure the head circumference one inch above the eyebrows and ears, then use this chart to find your approximate size.

GMAX Helmet Sizing Chart

CIRCUMFERENCE
HELMET LETTER SIZE
HAT SIZE
Metric cm
Inches
50 cm
19-11/16”
Youth/S
6-1/4”
51 cm
20-1/16”
Youth/S
6-3/8”
50 cm
19-11/16”
Youth Small/Medium
6-1/4”
51 cm
20-1/16”
Youth Small/Medium
6-3/8”
52 cm
20-7/16”
Youth/M
6-1/2”
53 cm
20-7/8”
Youth/M
6-5/8”
52 cm
20-7/16”
Youth Large/XLarge
6-1/2”
53 cm
20-7/8”
Youth Large/XLarge
6-5/8”
53.5 cm
21”
Youth/L
6-11/16”
54 cm
21-1/4”
XS
6-3/4”
55 cm
21-5/8”
XS
6-3/4”
56 cm
22”
S
57 cm
22-7/16”
S
7-1/8”
58 cm
22-13/16”
M
7-1/4”
59 cm
23-1/4”
M
7-3/8”
60 cm
23-5/8”
L
7-1/2”
61 cm
24”
L
7-5/8”
62 cm
24-3/8”
XL
7-3/4”
63 cm
24-13/16”
XL
7-7/8”
64 cm
25-3/16”
XXL
65 cm
25-5/8”
XXL
8-1/8”
66 cm
26”
XXXL
8-1/4”
67 cm
26-3/8”
XXXL
8-3/8”

 

Suomy Helmet Sizing Chart

Size Centimeter Inches Hat Size
XSm 53-54 20 1/2 - 20 7/8 6 1/2 - 6 5/8
Sm 55-56 21 1/4 - 21 5/8 6 3/4 - 6 7/8
Md 57-58 22 - 22 1/2 7 - 7 1/8
Lg 59-60 22 7/8 - 23 1/4 7 1/4 - 7 3/8
XL 61-62 23 5/8 - 24 7 1/2 - 7 5/8
XXL 63-64 24 1/2 - 24 7/8 7 3/4 - 7 7/8
XXXL 65-66 25 1/4 - 25 5/8 8 - 8 1/8

 

ICON Helmets Size Chart

Hat Size Helmet Size Centimeters
6 5/8 X-Small 53
6 3/4 54
6 7/8 Small 55
7 56
7 1/8 Medium 57
7 1/4 58
7 3/8 Large 59
7 1/2 60
7 5/8 X-Large 61
7 3/4 62
7 7/8 XX-Large 63
8 64

 

Fly Helmet Sizing

HAT SIZE MEASURED SIZE HELMET SIZE
6-7/8 thru 7 21-5/8 thru 22 Small
7 thru 7-1/4 22 thru 22-3/4 Medium
7-1/4 thru 7-1/2 22-3/4 thru 23-1/2 Large
7-1/2 thru 7-3/4 23-1/2 thru 24-3/8 X-Large

 

Jazz Motorsports | 1542 Reynolds Rd. Maumee, OH 43537 | 1.800.655.1460

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Your source for Sportbike Parts, ATV Parts, Dirt Bike Parts, Personal Watercraft Parts, and Snowmobile Parts. We ship from 8 warehouses around the United States, ensuring the parts you need are in stock and get to you quickly. Our customer service is second to none. Everyone here rides, races, or is a powersports enthusiast; this ensures you will only get the best products and advice from us.

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