O'Neal Racing Youth Helmets Size Chart

Youth 5 Series Acid Helmet
Helmets
Size Inches
Small 18 1/2" - 19 1/8"
Medium 19 1/4" - 19 1/8"
Large 20" - 20 1/2"
X-Large 20 1/2" - 21 1/8"

To measure your correct helmet size, measure the circumference of the head, like a headband - one inch above the eyebrows - above the ears. Match inch measurement to the chart. If between sizes, choose the next larger size. Helmet should fit snugly but not overly tight.

Sizing information is provided by the manufacturer and does not guarantee a perfect fit. Please use this chart as a guide only.