HJC Helmets Size Chart

RPHA-10 Lorenzo Helmet
Adult Helmets
Size Hat Sizes Inches
2X-Small 6 3/8 - 6 1/2 20 - 20 1/2
X-Small 6 5/8 - 6 3/4 20 7/8 - 21 1/4
Small 6 7/8 - 7 21 5/8 - 22
Medium 7 1/8 - 7 1/4 22 1/2 - 22 7/8
Large 7 3/8 - 7 1/2 23 1/4 - 23 5/8
X-Large 7 5/8 - 7 3/4 24 - 24 3/8
2X-Large 7 7/8 - 8 24 3/4 - 25 1/4
3X-Large 8 1/8 - 8 1/4 25 5/8 - 26

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