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Bell MTB Helmets Size Chart

4Forty, Drifter, Falcon, Formula, Sixer, Star Pro, Stratus, Super, XR Spherical, Z20
Size Centimeter Inches Hat (in)
S 52 - 56 20 1/2 - 22 6 1/2 - 7
M 55 - 59 21 5/8 - 23 1/4 6 7/8 - 7 3/8
L 58 - 62 22 3/4 - 24 3/8 7 1/4 - 7 3/4
XL 61 - 65 24 - 25 5/8 7 5/8 - 8 1/8
Avenue, Daily, Spark
Size Centimeter Inches Hat (in)
S/M 50 - 57 19 5/8 - 22 1/2 6 1/4 - 7 1/8
M/L 53 - 60 20 7/8 - 23 5/8 6 5/8 - 7 1/2
XL 56 - 63 22 - 24 7/8 6 1/2 - 7 7/8
Full - 9 Fusion, Transfer
Size Centimeter Inches Hat (in)
XS 51 - 53 20 - 20 7/8 6 3/8 - 6 5/8
S 53 - 55 20 7/8 - 21 5/8 6 5/8 - 7
M 55 - 57 21 5/8 - 22 3/8 7 - 7 1/8
L 57 - 59 22 3/8 - 23 1/4 7 1/8 - 7 1/2
XL 59 - 61 23 1/4 - 24 7 1/2 - 7 5/8
2XL 61 - 63 24 - 24 3/4 7 5/8 - 7 7/8
Full-10
Size Circumference (cm) Hat (in) Cheek Pad Size (mm)
XS 51 - 55 6 3/8 - 6 7/8 45
S 51 - 55 6 3/8 - 6 7/8 40
M 55 - 57 6 7/8 - 7 1/8 40
L 57 - 59 7 1/8 - 7 3/8 35
XL 59 - 63 7 3/8 - 7 7/8 35
XXL 59 - 63 7 3/8 - 7 7/8 30
Local, Racket
Size Centimeter Inches Hat (in)
S 51 - 55 20 1/8 - 21 5/8 6 3/8 - 6 7/8
M 55 - 59 21 5/8 - 23 1/4 6 7/8 - 7 3/8
L 59 - 61 1/2 23 1/4 - 24 1/4 7 3/8 - 7 3/4
Nomad 2
Size Centimeter Inches Hat (in)
S/M 52 - 57 20 1/2 - 22 1/2 6 1/2 - 7 1/8
M/L 53 - 60 20 7/8 - 23 5/8 6 5/8 - 7 1/2
Sanction
Size Centimeter Inches Hat (in)
XS 48 - 51 18 7/8 - 20 1/8 6 - 6 3/8
S 52 - 54 20 1/2 - 21 1/4 6 1/2 - 6 3/4
M 55 - 57 21 5/8 - 22 1/2 6 7/8 - 7 1/8
L 58 - 60 23 1/4 - 24 5/8 7 3/8 - 7 1/2
Sanction 2
Size Centimeter Inches Hat (in)
2XS 48 - 51 19 - 20 1/8 6 - 6 3/8
XS/S 51 - 55 20 1/8 - 21 5/8 6 3/8 - 6 7/8
M 55 - 57 21 5/8 - 22 1/2 6 7/8 - 7 1/8
L 57 - 59 22 1/2 - 23 1/4 7 1/8 - 7 3/8
XL 59 - 61 23 1/4 - 24 7 3/8 - 7 5/8
Trace
Size Centimeter Inches Hat (in)
S/M 50 - 57 19 5/8 - 22 1/2 6 1/4 - 7 1/8
M/L 54 - 61 20 1/4 - 24 6 3/4 - 7 5/8
XL 58 - 63 22 7/8 - 24 7/8 7 1/4 - 7 7/8

Sizing information is provided by the manufacturer and does not guarantee a perfect fit. Please use this chart as a guide only.