Bell Sizing Information

How to size
Adult Helmets (all except Drifter, Drifter DLX and Pit Boss)
Size Head Circumference (in) Head Circumference (cm) Hat Size
XXS 20 - 20 1/2 51 - 52 6 3/8 - 6 1/2
XS 21 1/4 - 21 5/8 54 - 55 6 3/4 - 6 7/8
S 21 5/8 - 22 55 - 56 6 7/8 - 7
M 22 1/2 - 22 3/4 57 - 58 7 1/8 - 7 1/4
L 22 3/4 - 23 1/4 58 - 59 7 1/4 - 7 3/8
XL 23 5/8 - 24 60 - 61 7 1/2 - 7 5/8
XXL 24 1/2 - 24 3/4 62 - 63 7 3/4 - 7 7/8
BELL DRIFTER
Size Head Circumference (in) Head Circumference (cm) Hat Size
X-SMALL 20 1/2 - 20 7/8 52-53 6 1/2 - 6 5/8
SMALL 21 1/4 - 21 5/8 54-55 6 3/4 - 6 7/8
MEDIUM 22 - 22 3/8 56-57 7 - 7 1/8
LARGE 22 3/4 - 23 1/4 58-59 7 1/4 - 7 3/8
X-LARGE 23 5/8 - 24 60-61 7 1/2 - 7 5/8
XX-LARGE 24 3/8 - 24 3/4 62-63 7 3/4 - 7 7/8
BELL DRIFTER DLX/PIT BOSS
Size Head Circumference (in) Head Circumference (cm) Hat Size
X-SMALL/SMALL 20 3/4 - 22 53-56 6 5/8 - 7
SMALL 20 3/4 - 22 53-56 6 5/8 - 7
MEDIUM 22 - 22 3/4 56-58 7 - 7 1/8
LARGE 22 3/4 - 23 5/8 58-60 7 1/4 - 7 1/2
X-LARGE 24 - 24 3/4 61-63 7 5/8 - 7 7/8
X-LARGE/XX-LARGE 24 - 24 3/4 61-63 7 5/8 - 7 7/8
HJC RPHA SERIES/FG-17/FG-JET SERIES
X-SMALL 21 1/4 - 21 5/8 54-55 6 3/4 - 6 7/8
SMALL 21 5/8 - 22 55-56 6 7/8 - 7
MEDIUM 22 1/2 - 22 7/8 57-58 7 1/8 - 7 1/4
LARGE 22 7/8 - 23 1/4 58-59 7 1/4 - 7 3/8
X-LARGE 23 5/8 - 24 60-61 7 1/2 - 7 5/8
XX-LARGE 24 3/8 - 24 3/4 62-63 7 3/4 - 7 7/8
XXX-LARGE 25 1/4 - 25 5/8 64-65 8 - 8 1/8
CL-17
SMALL 22 - 22 1/2 56-57 7 - 7 1/8
MEDIUM 22 7/8 - 23 1/4 58-59 7 1/4 - 7 3/8
LARGE 23 5/8 - 24 60-61 7 1/2 - 7 5/8
X-LARGE 24 3/8 - 24 3/4 62-63 7 3/4 - 7 7/8
XX-LARGE 24 3/4 - 25 1/4 63-64 7 7/8 - 8
XXX-LARGE 25 5/8 - 26 65-66 8 1/8 - 8 1/4
BELL RS-1 REPLACEMENT/OPTIONAL CHEEK PADS
HELMET SIZE SHELL SIZE STD. CHEEK PAD THICKNESS 30MM PART NO. 35MM PART NO. 40MM PART NO. 45MM PART NO.
XS S 40MM 32-9319-30 32-9319-35 32-9319-40 32-9319-45
S S 35MM 32-9319-30 32-9319-35 32-9319-40 32-9319-45
M M 40MM 32-9315-30 32-9315-35 32-9315-40 32-9315-45
L M 35MM 32-9315-30 32-9315-35 32-9315-40 32-9315-45
XL L 40MM 32-9317-30 32-9317-35 32-9317-40 32-9317-45
XXL L 35MM 32-9317-30 32-9317-35 32-9317-40 32-9317-45
BELL STAR/STAR CARBON (2013 AND NEWER) REPLACEMENT/OPTIONAL CHEEK PADS
HELMET SIZE SHELL SIZE STD. CHEEK PAD THICKNESS 35MM PART NO. 40MM PART NO. 45MM PART NO. 50MM PART NO. 55MM PART NO.
XS S 50MM 32-9320-35 32-9320-40 32-9320-45 32-9320-50 32-9320-55
S S 40MM 32-9320-35 32-9320-40 32-9320-45 32-9320-50 32-9320-55
M M 50MM 32-9316-35 32-9316-40 32-9316-45 32-9316-50 32-9316-55
L M 40MM 32-9316-35 32-9316-40 32-9316-45 32-9316-50 32-9316-55
XL L 50MM 32-9318-35 32-9318-40 32-9318-45 32-9318-50 32-9318-55
XXL L 40MM 32-9318-35 32-9318-40 32-9318-45 32-9318-50 32-9318-55