Trekker Granite Helmet (2026)
Features ECE / DOT approved Durable and lightweight poly-alloy shell Dual density EPS Drop down sun shade with anti-fog coating Chin bar breath guard COMFORT/LINER Removable, adjustable, and washable antimicrobial... Read More
Features
- ECE / DOT approved
- Durable and lightweight poly-alloy shell
- Dual density EPS
- Drop down sun shade with anti-fog coating
- Chin bar breath guard COMFORT/LINER
- Removable, adjustable, and washable antimicrobial SpaSoft™ interior allows for easy cleaning and custom fitting
- Switchable On/Off integrated ventilation system in the chin bar, front brow, and rear of the helmet, allows for customized airflow
- Includes soft fleece helmet bag
- Optional outer face shields available
- Optional cold weather kit available
How to measure
Use a soft tape measure starting at your forehead about one inch above your eyebrows, wrapping across the largest portion of the back of your head. Match that measurement to the chart. No soft tape? Wrap a string the same way, then measure it flat with a ruler.
FLY Racing size chart
| Size | Head circumference (cm) | Head circumference (inches) |
|---|---|---|
| XS | 53-54 | 20 7/8 - 21 1/4 |
| S | 55-56 | 21 5/8 - 22 |
| M | 57-58 | 22 7/16 - 22 13/16 |
| L | 59-60 | 23 1/4 - 23 5/8 |
| XL | 61-62 | 24 - 24 3/8 |
| 2XL | 63-64 | 24 13/16 - 25 3/16 |
| 3XL | 65-66 | 25 9/16 - 26 |
Youth sizes
| Size | Head circumference (cm) | Head circumference (inches) |
|---|---|---|
| YS | 47-48 | 18 1/2 - 18 7/8 |
| YM | 49-50 | 19 5/16 - 19 11/16 |
| YL | 51-52 | 20 1/16 - 20 1/2 |
One official FLY chart covers all moto/MX and street helmets (the brand publishes separate MOTO and STREET chart images, but they are identical). Snow and bicycle helmets use their own charts. cm ranges are official; inch ranges converted from cm (FLY publishes a ruler-style chart, not an inch table).
Manufacturer sizing data · verified July 8, 2026