1. Achieve the perfect fit by measuring your head circumference correctly.
2. Watch the video below to see how to measure your head correctly. (If you don’t see a video below, please refresh this page, or you might need to allow this website through your Ad blocker.)
3. VIDEO: How To Measure For A Bike Helmet
4. On the chart below, find the helmet model that you are interested in, then find your head measurement to see which size you need.
Leatt Bike Helmet Size Charts
Half shell |
S |
M |
L |
DBX 1.0 Mountain |
51 – 55cm |
55 – 59cm |
59 – 63cm |
20″ – 21⅝” |
21⅝” – 23¼” |
23¼” – 24¾” |
DBX 2.0 Trail |
51 – 55cm |
55 – 59cm |
59 – 63cm |
20″ – 21⅝” |
21⅝” – 23¼” |
23¼” – 24¾” |
DBX 2.0 V19.1 Trail |
51 – 55cm |
55 – 59cm |
59 – 63cm |
20″ – 21⅝” |
21⅝” – 23¼” |
23¼” – 24¾” |
DBX 3.0 All-Mountain |
51 – 55cm |
55 – 59cm |
59 – 63cm |
20″ – 21⅝” |
21⅝” – 23¼” |
23¼” – 24¾” |
DBX 3.0 All-Mountain V19.1 |
51 – 55cm |
55 – 59cm |
59 – 63cm |
20″ – 21⅝” |
21⅝” – 23¼” |
23¼” – 24¾” |
DBX 3.0 All-Mountain V19.2 |
51 – 55cm |
55 – 59cm |
59 – 63cm |
20″ – 21⅝” |
21⅝” – 23¼” |
23¼” – 24¾” |
Half shell |
XS/S |
M/L |
DBX 1.0 Urban |
51 – 55cm |
55 – 59cm |
20″ – 21⅝” |
21⅝” – 23¼” |
Full-Face – DH |
S |
M |
L |
XL |
DBX 3.0 DH V20.1 |
55 – 56cm |
57 – 58cm |
59 – 60cm |
61 – 62cm |
21⅝” – 22″ |
22½” – 22¾” |
23¼” – 23⅝” |
24″ – 24½” |
DBX 4.0 V19.1 |
55 – 56cm |
57 – 58cm |
59 – 60cm |
61 – 62cm |
21⅝” – 22″ |
22½” – 22¾” |
23¼” – 23⅝” |
24″ – 24½” |
DBX 4.0 V19.3 |
55 – 56cm |
57 – 58cm |
59 – 60cm |
61 – 62cm |
21⅝” – 22″ |
22½” – 22¾” |
23¼” – 23⅝” |
24″ – 24½” |
DBX 4.0 V20.1 |
55 – 56cm |
57 – 58cm |
59 – 60cm |
61 – 62cm |
21⅝” – 22″ |
22½” – 22¾” |
23¼” – 23⅝” |
24″ – 24½” |
Full-Face – DH/BMX |
XS |
S |
M |
L |
XL |
XXL |
DBX 5.0 V19.1 |
53 – 54cm |
55 – 56cm |
57 – 58cm |
59 – 60cm |
61 – 62cm |
63 – 64cm |
20¾” – 21¼” |
21⅝” – 22″ |
22½” – 22¾” |
23¼” – 23⅝” |
24″ – 24½” |
24¾” – 25¼” |
DBX 6.0 CARB V23 |
53 – 54cm |
55 – 56cm |
57 – 58cm |
59 – 60cm |
61 – 62cm |
63 – 64cm |
20¾” – 21¼” |
21⅝” – 22″ |
22½” – 22¾” |
23¼” – 23⅝” |
24″ – 24½” |
24¾” – 25¼” |
Convertible – DH |
S |
M |
L |
DBX 3.0 ENDURO V2 |
51 – 55cm |
55 – 59cm |
59 – 63cm |
20″ – 21⅝” |
21⅝” – 23¼” |
23¼” – 24¾” |
DBX 3.0 ENDURO V19.1 |
51 – 55cm |
55 – 59cm |
59 – 63cm |
20″ – 21⅝” |
21⅝” – 23¼” |
23¼” – 24¾” |
MTB 4.0 ENDURO V21 |
51 – 55cm |
55 – 59cm |
59 – 63cm |
20″ – 21⅝” |
21⅝” – 23¼” |
23¼” – 24¾” |