Kinetic Solid Helmet
Features DOT approved ECE approved internationally Durable and lightweight polymer shell Dual-density EPS (Expanded Polystyrene) liner Custom molded rubber trim with integrated nose guard Three shells and four EPS sizes... Read More
Features
- DOT approved
- ECE approved internationally
- Durable and lightweight polymer shell
- Dual-density EPS (Expanded Polystyrene) liner
- Custom molded rubber trim with integrated nose guard
- Three shells and four EPS sizes provide a precise fit
- Removable and washable comfort liner and cheek pads absorb sweat while providing ventilation
- All FLY helmets have TFV (True Functional Ventilation). When in motion air is forced through multiple air intake vents, then passed through aligned vent channels in the EPS and exits out multiple rear exhaust vents
- High-flow mouthpiece is replaceable
- Soft fleece helmet bag
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