How to size
CUSTOM 500
SIZE INCHES CM HAT SIZE
X-SMALL 21 1/4 - 21 5/8 53-54 6 3/4 - 6 7/8
SMALL 21 5/8 - 22 55-56 6 7/8 - 7
MEDIUM 22 1/2 - 22 3/4 57-58 7 1/8 - 7 1/4
LARGE 22 3/4 - 23 1/4 59-60 7 1/4 - 7 3/8
X-LARGE 23 5/8 - 24 61 -62 7 1/2 - 7 5/8
XX-LARGE 24 1/2 - 24 3/4 63-64 7 3/4 - 7 7/8
SRT/SRT MODULAR HELMETS
SIZE INCHES CM HAT SIZE
XS 20 7/8 - 21 1/8 53-54 6 5/8 - 6 3/4
S 21 1/2 - 21 7/8 55-56 6 7/8 - 7
M 22 1/4 - 22 5/8 57-58 7 1/8 - 7 1/4
L 23 - 23 1/2 59-60 7 3/8 - 7 1/2
XL 23 7/8 - 24 1/2 61-62 7 5/8 - 7 3/4
XXL 24 5/8 - 25 63-64 7 7/8 - 8
XXXL 25 1/2 - 26 65-66 8 1/8 - 8 1/4
2016 BELL STAR MAGNEFUSION STANDARD AND OPTIONAL CHEEK PAD SIZING
SIZE OEM THICKNESS ALL CHEEK PADS FIT ALL HELMETS
XS 35MM 320341425 (25MM)
S 35MM 320341430 (30MM)
M 35MM 320341435 (35MM)
L 35MM 320341440 (40MM)
XL 40MM 320341445 (45MM)
XXL 35MM 320341450 (50MM)
2016 BELL STAR X-STATIC STANDARD AND OPTIONAL CHEEK PAD SIZE CHART
SIZE OEM CHEEK PAD THICKNESS ALL CHEEK PADS FIT ALL HELMET
XS 35MM 320341525 (25MM)
S 35MM 320341530 (30MM)
M 35MM 320341535 (35MM)
L 35MM 320341540 (40MM)
XL 40MM 320341545 (45MM)
XXL 35MM 320341550 (50MM)
320341555 (55MM)
320341560 (60MM)
BELL DRIFTER DLX/PIT BOSS
SIZE INCHES CM HAT SIZE
X-SMALL/SMALL 20 3/4 - 21 5/8 53-56 6 5/8 - 7
MEDIUM 22 - 22 3/4 56-58 7 - 7 1/4
LARGE 22 3/4 - 23 5/8 58-60 7 1/4 - 7 1/2
X-LARGE/XX-LARGE 24 - 24 3/4 61-63 7 5/8 - 7 7/8
XXX-LARGE 24 3/4 - 25 1/4 63-64 7 7/8 - 8
BELL MOTO- 9 YOUTH HELMET SIZE CHART
SIZE INCHES CM HAT SIZE
S/M 19 1/4 - 20 49-51 6 1/8 - 6 3/8 IN.
L/XL 20 - 20 7/8 51-53 6 3/8 - 6 5/8 IN.
BELL MX-9/MX-9 SEVEN/MX-9 ADVENTURE
SIZE INCHES CM HAT SIZE
X-SMALL 20 3/4 - 21 1/4 53-54 6 5/8 - 6 3/4
SMALL 21 5/8 - 22 55-56 6 7/8 - 7
MEDIUM 22 1/2 - 22 3/4 57-58 7 1/8 - 7 1/4
LARGE 23 1/4 - 23 5/8 59-60 7 3/8 - 7 1/2
X-LARGE 24 - 24 1/4 61-62 7 5/8 - 7 3/4
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 REVOLVER/VORTEX/BULLITT/BULLITT CARBON/BULLITT SE/MAG-9/ROGUE
SIZE INCHES CM HAT SIZE
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 3/4 57-58 7 1/8 - 7 1/4
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 1/2 - 24 3/4 62-63 7 3/4 - 7 7/8
BELL RS-1/RS-2 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 (2013-2015) 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
ELIMINATOR/ELIMINATOR FA HELMET SIZE CHART
HELMET SIZE CIRCUMFERENCE (CM) CIRCUMFERENCE (IN.)
XS 53-54 20 7/8 - 21 5/8
S 55-56 21 5/8 - 22
M 57-58 22 1/2 - 22 7/8
M/L 58-59 22 7/8 - 23 1/4
L 59-60 23 1/4 - 23 5/8
XL 61-62 24 - 24 3/8
XXL 63-64 24 3/4 - 25 1/4
XXXL 65-66 25 5/8 - 26
Eliminator/FA Helmet Replacement/Optional Cheek Pads/Top Liner Chart
HELMET SIZE XS S M M/L L XL XXL XXXL
SHELL 1 2 3
EPS 1 2 3 4 5
CHEEK PADS (MM) 45 40 35 40 40 35 30 25
TOP LINER XS S M M/L L XL XXL XXXL

Note: Cheek pads and top liners do not interchange with other helmet sizes

FG-JET REPLACEMENT/OPTIONAL CHEEK PAD/LINER FITMENT CHART
HELMET SIZE XS S M L XL XXL
SHELL S S M M L L
EPS S S M M L L
CHEEK PADS (MM) (INTERCHANGEABLE) 40 35 35 30 30 25
LINER (MM) 12 9 15 12 12 9
INTERCHANGEABLE LINERS: * XS/S; ** M/L; *** XL-XXL * * ** ** *** ***
IS-33 II REPLACEMENT/OPTIONAL CHEEK PAD AND LINER FITMENT CHART
HELMET SIZE XS S M L XL XXL
SHELL M M M L L L
EPS M M M L L L
CHEEK PADS (MM) (INTERCHANGEABLE) 35 30 25 30 25 20
LINER (MM) 15 12 9 15 12 9
INTERCHANGEABLE LINERS: * XS-M; ** L-XXL * * * ** ** **
MOTO 3 HELMET SIZE CHART
SIZE INCHES CM HAT SIZE
XS 20 3/4 - 21 1/4 53-54 6 5/8 - 6 3/4
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 23 1/4 - 23 5/8 59-60 7 3/8 - 7 1/2
XL 24 - 24 1/4 61-62 7 5/8 - 7 3/4
XXL 24 3/4 - 25 1/4 63-64 7 7/8 - 8
MX-9 Mips Cheek Pad and Liner Fitment Chart
HELMET SIZE XS S M L XL XXL XXXL
SHELL 1 2 3
EPS 1 2 3
CHEEK PAD (MM) 40 35 40 35 35 30 25
TOP PAD SIZE XS S M L XL XXL XXXL
NOTE: ALL CHEEK PADS FIT ALL HELMET SIZES
QUALIFIER HELMET SIZE CHART
SIZE INCHES CM HAT SIZE
XS 20 7/8 - 21 1/8 53-54 6 5/8 - 6 3/4
S 21 1/2 - 21 7/8 55-56 6 7/8 - 7
M 22 1/4 - 22 5/8 57-58 7 1/8 - 7 1/4
L 23 - 23 1/2 59-60 7 3/8 - 7 1/2
XL 23 7/8 - 24 1/2 61-62 7 5/8 - 7 3/4
XXL 24 5/8 - 25 63-64 7 7/8 - 8
XXXL 25 1/2 - 26 65-66 8 1/8 - 8 1/4
Recon Helmet Ear Pad and Liner Fitment Chart
HELMET SIZE XS S M L XL XXL XXXL
SHELL 1 2 3
EPS 1 2 3
EAR PADS ONE SIZE FITS ALL
LINER XS S M L XL XXL XXXL

Note: Liners only interchange within the same eps size

RECON/RIOT HELMET SIZE CHART
HELMET SIZE CIRCUMFERENCE (CM) CIRCUMFERENCE (IN.) HAT SIZE (IN.)
XS 53-54 21 1/4 - 21 5/8 6 3/4 - 6 7/8
S 55-56 21 5/8 - 22 6 7/8 - 7
M 57-58 22 1/2 -22 3/4 7 1/8 - 7 1/4
L 59-60 22 3/4 - 23 1/4 7 1/4 - 7 3/8
XL 61-62 23 5/8 - 24 7 1/2 - 7 5/8
XXL 63-64 24 1/2 - 24 3/4 7 3/4 - 7 7/8
XXXL 65-66 25 1/2 - 26 8 1/8 - 8 1/4
ROGUE HELMET CHEEK PAD AND PADDING FITMENT CHART
HELMET SIZE XS S M L XL XXL
SHELL 1 2 3
EPS 1 2 3
CHEEK PADS 35 25 35 25 35 25
PADDING KIT XS S M L XL XXL
RS-2 HELMET SIZE CHART
SIZE INCHES CM HAT SIZE
XS 21 1/8 - 21 1/2 54-55 6 3/4 - 6 7/8
S 21 1/2 - 21 7/8 55-56 6 7/8 - 7
M 22 1/4 - 22 5/8 57-58 7 1/8 - 7 1/4
L 22 5/8 - 23 58-59 7 1/4 - 7 3/8
XL 23 1/2 - 23 7/8 60-61 7 1/2 - 7 5/8
XXL 24 1/4 - 24 5/8 62-63 7 3/4 - 7 7/8
SRT Helmet Cheek Pad and Top Liner Fitment Chart
Helmet Size XS S M L XL XXL XXXL
Shell 1 2 3
EPS 1 2 3
Cheek Pads (mm) 40 35 40 35 35 30 25
Top Liner XS S M L XL XXL XXXL

Note: Cheek pads are interchangeable with all helmet sizes; top liners only interchange with the same EPS size.

BELL DRIFTER
SIZE INCHES 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 JR. MOTO
SIZE INCHES CM HAT SIZE
SMALL 20 1/2 - 20 5/8 52-53 6 1/2 - 6 3/8
MEDIUM 21 1/4 - 21 1/2 54-55 6 3/4 - 6 7/8
LARGE 22 - 22 1/8 56-57 7 - 7 1/8
XL 22 3/8 - 22 3/4 57-58 7 1/8 - 7 1/4
BELL PRO STAR/RACE STAR/STAR
SIZE INCHES CM HAT SIZE
X-SMALL 20 7/8 - 21 1/4 53-54 6 5/8 - 6 3/4
SMALL 22 1/2 - 22 3/4 55-56 7 1/8 - 7 1/4
MEDIUM 22 1/4 - 22 5/8 57-58 7 1/8 - 7 1/4
LARGE 23 - 23 1/2 59-60 7 3/8 - 7 1/2
X-LARGE 23 7/8 - 24 1/4 61 -62 7 5/8 - 7 3/4
XX-LARGE 24 5/8 - 25 1/8 63-64 7 7/8 - 8
BELL REVOLVER/VORTEX/MOTO 9/MOTO 9 FLEX
SIZE INCHES CM HAT SIZE
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 3/4 57-58 7 1/8 - 7 1/4
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 1/2 - 24 3/4 62-63 7 3/4 - 7 7/8
BELL SX-1
SIZE INCHES CM HAT SIZE
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 3/4 57-58 7 1/8 - 7 1/4
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 1/4 - 24 3/4 62-63 7 3/4 - 7 7/8
BELL
SIZE INCHES CM HAT SIZE
XX-SMALL 20 - 20 1/2 51-52 6 3/8 - 6 1/2
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 3/4 57-58 7 1/8 - 7 1/4
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 1/2 - 24 3/4? 62-63 7 3/4 - 7 7/8