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.
Bell Bike Helmet Size Charts
Bell Road Bike Helmet Standard Sizing
Model |
Small |
Medium |
Large |
X-Large |
Annex MIPS |
52 – 56cm |
55 – 59cm |
58 – 62cm |
|
20½” – 22″ |
21¾” – 23¼” |
22⅞” – 24½” |
|
Catalyst MIPS |
52 – 56cm |
55 – 59cm |
58 – 62cm |
|
20½” – 22″ |
21¾” – 23¼” |
22⅞” – 24½” |
|
Drifter MIPS |
52 – 56cm |
55 – 59cm |
58 – 62cm |
|
20½” – 22″ |
21¾” – 23¼” |
22⅞” – 24½” |
|
Falcon MIPS |
52 – 56cm |
55 – 59cm |
58 – 62cm |
61 – 65cm |
20½” – 22″ |
21¾” – 23¼” |
22⅞” – 24½” |
24″ – 25⅝” |
Formula MIPS |
52 – 56cm |
55 – 59cm |
58 – 62cm |
|
20½” – 22″ |
21¾” – 23¼” |
22⅞” – 24½” |
|
Formula LED MIPS |
52 – 56cm |
55 – 59cm |
58 – 62cm |
|
20½” – 22″ |
21¾” – 23¼” |
22⅞” – 24½” |
|
Formula LED MIPS Ghost |
52 – 56cm |
55 – 59cm |
58 – 62cm |
|
20½” – 22″ |
21¾” – 23¼” |
22⅞” – 24½” |
|
Hub |
52 – 56cm |
55 – 59cm |
58 – 62cm |
|
20½” – 22″ |
21¾” – 23¼” |
22⅞” – 24½” |
|
Javelin |
51 – 55cm |
55 – 59cm |
59 – 63cm |
|
20⅛” – 21⅝” |
21¾” – 23¼” |
23¼” – 24⅞” |
|
Stratus MIPS |
52 – 56cm |
55 – 59cm |
58 – 62cm |
|
20½” – 22″ |
21¾” – 23¼” |
22⅞” – 24½” |
|
Z20 MIPS |
52 – 56cm |
55 – 59cm |
58 – 62cm |
|
20½” – 22″ |
21¾” – 23¼” |
22⅞” – 24½” |
|
Z20 Aero MIPS |
52 – 56cm |
55 – 59cm |
58 – 62cm |
|
20½” – 22″ |
21¾” – 23¼” |
22⅞” – 24½” |
|
Z20 Ghost MIPS |
52 – 56cm |
55 – 59cm |
58 – 62cm |
|
20½” – 22″ |
21¾” – 23¼” |
22⅞” – 24½” |
|
Bell Road Bike Helmet Universal Sizing
Model |
Universal Women’s |
Universal Adult |
Universal X-Large |
Avenue MIPS |
50 – 57cm |
54 – 61cm |
56 – 63cm |
19¾” – 22½” |
21¼” – 24″ |
22″ – 24⅞” |
Avenue MIPS LED |
50 – 57cm |
53 – 60cm |
58 – 63cm |
19¾” – 22½” |
20⅞” – 23⅝” |
22⅞” – 24⅞” |
Daily MIPS LED |
50 – 57cm |
54 – 61cm |
|
19¾” – 22½” |
21¼” – 24″ |
|
Trace MIPS |
50 – 57cm |
54 – 61cm |
|
19¾” – 22½” |
21¼” – 24″ |
|
Trace MIPS LED |
50 – 57cm |
54 – 61cm |
|
19¾” – 22½” |
21¼” – 24″ |
|
Trace |
50 – 57cm |
53 – 60cm |
58 – 63cm |
19¾” – 22½” |
20⅞” – 23⅝” |
22⅞” – 24⅞” |
Bell Mountain Bike Helmet Standard Sizing
Model |
Small |
Medium |
Large |
X-Large |
4Forty MIPS |
52 – 56cm |
55 – 59cm |
58 – 62cm |
61 – 65cm |
20½” – 22″ |
21¾” – 23¼” |
22⅞” – 24½” |
24″ – 25⅝” |
Sixer MIPS |
52 – 56cm |
55 – 59cm |
58 – 62cm |
61 – 65cm |
20½” – 22″ |
21¾” – 23¼” |
22⅞” – 24½” |
24″ – 25⅝” |
Super 3R MIPS |
52 – 56cm |
55 – 59cm |
58 – 62cm |
|
20½” – 22″ |
21¾” – 23¼” |
22⅞” – 24½” |
|
Super Air MIPS |
52 – 56cm |
55 – 59cm |
58 – 62cm |
|
20½” – 22″ |
21¾” – 23¼” |
22⅞” – 24½” |
|
Super Air R MIPS |
52 – 56cm |
55 – 59cm |
58 – 62cm |
|
20½” – 22″ |
21¾” – 23¼” |
22⅞” – 24½” |
|
Super DH MIPS |
52 – 56cm |
55 – 59cm |
58 – 62cm |
|
20½” – 22″ |
21¾” – 23¼” |
22⅞” – 24½” |
|
Bell Mountain Bike Helmet Universal Sizing
Model |
Universal Women’s |
Universal Adult |
Universal X-Large |
Nomad MIPS |
52 – 57cm |
53 – 60cm |
|
20½” – 22½” |
20⅞” – 23⅝” |
|
Spark MIPS |
50 – 57cm |
53 – 60cm |
58 – 63cm |
19¾” – 22½” |
20⅞” – 23⅝” |
22⅞” – 24⅞” |
Bell MTB/BMX Helmet Sizing
Model |
X-Small |
Small |
Medium |
Large |
X-Large |
XX-Large |
Full-9 |
51 – 55cm |
|
55 – 57cm |
57 – 59cm |
59 – 63cm |
|
20⅛” – 21¾” |
|
21¾” – 22½” |
22½” – 23¼” |
23¼” – 24⅞” |
|
Full-9 Fusion MIPS |
51 – 53cm |
53 – 55cm |
55 – 57cm |
57 – 59cm |
59 – 61cm |
61 – 63cm |
20⅛” – 20⅞” |
20⅞” – 21¾” |
21¾” – 22½” |
22½” – 23¼” |
23¼” – 24″ |
24″ – 24⅞” |
Sanction |
48 – 51cm |
51 – 55cm |
55 – 59cm |
59 – 61.5cm |
|
|
19″ – 20⅛” |
20⅛” – 21¾” |
21¾” – 23¼” |
23¼” – 24¼” |
|
|
Span |
49 – 53cm |
51 – 55cm |
|
|
|
|
19⅜” – 20⅞” |
20⅛” – 21¾” |
|
|
|
|
Transfer |
51 – 53cm |
53 – 55cm |
55 – 57cm |
57 – 59cm |
59 – 61 |
61 -63cm |
20⅛” – 20⅞” |
20⅞” – 21¾” |
21¾” – 22½” |
22½” – 23¼” |
23¼” – 24″ |
24″ – 24⅞” |
Bell Kids & Youth Bike Helmets
Model |
Universal Toddler |
Universal Child |
Universal Youth |
Lil Ripper |
45 – 51cm |
47 – 54cm |
|
17¾” – 20⅛” |
18½” – 21¼” |
|
Nomad JR MIPS |
|
|
52 – 57cm |
|
|
20½” – 22½” |
Sidetrack II MIPS |
45 – 52cm |
47 – 54cm |
50 – 57cm |
17¾” – 20½” |
18½” – 21¼” |
19¾” – 22½” |
Sidetrack II |
45 – 52cm |
47 – 54cm |
50 – 57cm |
17¾” – 20½” |
18½” – 21¼” |
19¾” – 22½” |