Z1R Adult Helmet Size Chart

Z1R helmet size chart showing head circumference in inches and centimeters for adult, youth and child sizes, with a how-to-measure head diagram.

Z1R Helmet Size Chart (Adult, Youth, Child)

Category Size Head (in) Head Min (cm) Head Max (cm)
Adult 2XS 20⅛ – 20½ 51 52
Adult XS 20⅞ – 21¼ 53 54
Adult S 21⅝ – 22 55 56
Adult M 22½ – 22¾ 57 58
Adult L 23⅛ – 23⅝ 59 60
Adult XL 24 – 24½ 61 62
Adult 2XL 24¾ – 25¼ 62 64
Adult 3XL 25½ – 26 64 65
Adult 4XL 26¼ – 26¾ 66 67
Youth S 18½ – 18⅞ 47 48
Youth M 19¼ – 19¾ 49 50
Youth L 20 – 20½ 51 52
Child S/M 18⅞ – 19¾ 49 50
Child L/XL 19⅞ – 20¼ 50 51

Measure & Fit

Step Instructions
Step 1 Head (H): wrap a flexible tape around your head about one inch above your eyebrows and ears.
Step 2 Find that measurement, in inches or centimeters, in the chart above.
Step 3 Try it on: the helmet should hold the crown of your head comfortably with no pressure points, and the cheek pads should feel firm.
Step 4 Fasten the chin strap and move the chin bar side to side. Your cheeks should move with the helmet, not slide.

Notes: Sizing is in inch measurements and provided by the manufacturer. Z1R does not guarantee a perfect fit.