Bell Store Helmets

Click here for a printable
version of these pages.

1. Measurement

Measuring the head is a starting point for the entire sizing procedure. Due to varying shapes, heads that are apparently the same size when measured by a tape may not necessarily fit the same size helmet.

A small metal tape measure, or a cloth tape may be used to make your initial measurement.

The circumference of the head should be measured at a point approximately one inch above the eyebrows in front, and at a point in the back of the head that results in the largest possible measurement. Take several measurements, to make sure you have the largest one.

PLEASE NOTE THAT THIS IS A ROUGH GUIDE AND NOT EXACT. THE SHAPE OF YOUR HEAD IS AS IMPORTANT AS THE MEASUREMENT WHICH MAY AFFECT FINAL FIT!

Size Cross Reference

Motorcycle Helmet Sizing Chart

YOUTH HELMET SIZE	HEAD CIRC. (IN)	HEAD CIRC. (CM)	HAT SIZE

Youth SM	19 1/2" - 20"	50cm - 51cm	5 7/8 - 6 1/8

Youth MD	20" - 20 1/2"	51cm - 52cm	6 1/8 - 6 3/8

Youth LG	20 1/2" - 21"	52cm - 53cm	6 3/8 - 6 5/8

ADULT HELMET SIZE	HEAD CIRC. (IN)	HEAD CIRC. (CM)	HAT SIZE

XS	20 7/8" - 21 1/4"	53cm - 54cm	6 5/8 - 6 3/4

SM	21 5/8" - 22"	55cm - 56cm	6 7/8 - 7

MD	22 3/8" - 22 3/4"	57cm - 58cm	7 1/8 - 7 1/4

LG	23 1/4" - 23 5/8"	59cm - 60cm	7 3/8 - 7 1/2

XL	24" - 24 3/8"	61cm - 62cm	7 5/8 - 7 3/4

XXL	24 3/4" - 25 1/4"	63cm - 64cm	7 7/8 - 8

Auto Helmet Sizing Chart

ADULT HELMET SIZE HEAD CIRC. (IN) HEAD CIRC. (CM) HAT SIZE

XXS 21 1/4" - 21 5/8 54cm - 55cm 6 3/4 - 6 7/8

XS 22 56cm 7

SM 22 3/8" 57cm 7 1/8

MD 22 3/4" - 23 1/8" 58cm - 59cm 7 1/4 - 7 3/8

LG 23 1/2" - 23 7/8" 60cm - 61cm 7 1/2 - 7 5/8

XL 24 1/4" 62cm 7 3/4

M3 XTRA 8 25 1/8" - 25 1/2" 64cm - 65cm 8

M3 XTRA 8 1/4 25 7/8" - 26 1/4" 66cm - 67cm 8 1/4

M3 XTRA 8 1/2 26 3/8" 68cm 8 1/2