Measure around your head just above your eyebrows and ears with a soft tape. The tape should be snug without being tight. Use the result as a starting point, then check the helmet fit before riding.
Adult V1 motocross helmets
| FOX size |
Head circumference (cm) |
| XS |
53–54 |
| S |
55–56 |
| M |
57–58 |
| L |
59–60 |
| XL |
61–62 |
| XXL |
63–64 |
Check the size selector for current availability. Ask RBS Yamaha for help choosing your size.
FOX helmet fit instructions
Size reference: Fox Racing South Africa.