F1, F3, F5, TK1200, KRIOS, K1R
| Helmet Size |
Hat Size |
Head Circ. (in) |
Head Circ. (cm) |
| XS |
6 5/8" - 6 3/4" |
20 8/16" - 20 14/16" |
52 - 53 |
| S |
6 15/16" - 7 3/16" |
21 4/16" - 21 11/16" |
54 - 55 |
| M |
7 1/4" - 7 3/8" |
22 1/16" - 22 7/16" |
56 - 57 |
| L |
7 1/2" - 7 5/8" |
22 13/16" - 23 4/16" |
58 - 59 |
| XL |
7 3/4" |
23 10/16" - 24" |
60 - 61 |
| 2XL |
7 7/8" |
24 7/16" - 24 13/16" |
62 - 63 |
| 3XL |
8 3/8" |
25 3/16" - 25 10/16" |
64 - 65 |
R1 AIR FRESH AIR
| Helmet Size |
Head Circ. (in) |
Head Circ. (cm) |
| S |
21 21/32" - 2 23/64" |
55 - 56 |
| M |
22 7/16" - 22 53/64" |
57 - 58 |
| L |
23 15/64" - 23 5/8" |
59 - 60 |
| XL |
24 1/64" - 24 13/32" |
61 - 62 |
| 2XL |
24 51/64" - 25 13/64" |
63 - 64 |
Sizing information is provided by the manufacturer and does not guarantee a perfect fit. Please use this chart as a guide only.
