Sizing

Motorcycle Offroad and Snow Helmet Size Charts

ZOAN Helmets Adult Size Chart
ZOAN Helmets Youth Size Chart
Joe Rocket Size Chart
HJC Standard Size Chart
HJC Youth Size Chart
HJC RPHA FG-Jet and FG-17 Size Chart

Thirty Thousand Helmets on Amazon. Shop Now!

Zoan Helmets Adult Helmet Size Chart
HELMET-SIZE HAT-SIZE CIRCUMFERENCE (CM) CIRCUMFERENCE (IN)
XXS 6-3/8” – 6-1/2” 51-52 20-1/8” – 20-1/2”
XS 6-5/8” – 6-3/4” 53-54 20-7/8” – 21-1/4”
S 6-7/8” – 7” 55-56 20-5/8” – 22”
M 7-1/8” – 7-1/4” 57-58 22-1/2” – 22-7/8”
L 7-3/8” – 7-1/2” 59-60 23-1/4” – 23-5/8”
XL 7-5/8” – 7-3/4” 61-62 24” – 24-3/8”
2X 7-7/8” – 8” 63-64 24-3/4” – 25-1/2”
3X 8-1/8” – 8-1/4” 65-66 25-5/8” – 26”
4X 8-3/8” – 8-1/2” 67-68 26-3/8” – 26-3/4”
5X 8-5/8” – 8-3/4” 69-70 27-1/8” – 27-1/2”

Zoan Helmets Adult Helmet Size Chart
HELMET-SIZE CIRCUMFERENCE (CM) CIRCUMFERENCE (IN)
S 49-50 19.15” – 19.50”
M 51-52 20.10” – 20.45”
L 53-54 20.87” – 21.26”

Joe Rocket Motorcycle Helmet Size Chart
Helmet Size Centimeter Hat Size Inches
XS – Extra-Small 53 – 54 6 5/8 – 6 3/4 20 7/8 – 21 1/4
SM – Small 55 – 56 6 7/8 – 7 21 5/8 – 22
MD – Medium 57 – 58 7 1/8 – 7 1/4 22 1/2 – 22 7/8
LG – Large 59 – 60 7 3/8 – 7 1/2 23 1/4 – 23 5/8
XL – Extra-Large 61 – 62 7 5/8 – 7 3/4 24 – 24 3/8
XXL – Extra-Extra-Large 63 – 64 7 7/8 – 8 24 3/4 – 25 1/4

HJC Helmet Size Convention Chart
*** Please see below for Size chart specific to RPHA Series, FG-Jet, FG-17Model Helmets ***
Helmet Size Centimeter Hat Size Inches
XXS – Extra-Extra-Small 51 – 52 6 3/8-6 1/2 20-20 1/2
XS – Extra-Small 53 – 54 6 5/8 – 6 3/4 20 7/8 – 21 1/4
SM – Small 55 – 56 6 7/8 – 7 21 5/8 – 22
MD – Medium 57 – 58 7 1/8 – 7 1/4 22 1/2 – 22 7/8
LG – Large 59 – 60 7 3/8 – 7 1/2 23 1/4 – 23 5/8
XL – Extra-Large 61 – 62 7 5/8 – 7 3/4 24 – 24 3/8
XXL – Extra-Extra-Large 63 – 64 7 7/8 – 8 24 3/4 – 25 1/4
3XL – 65-66 8 1/8-8 1/4 25 5/8-26
4XL – 67-68 8 3/8-8 1/2 26 3/8-26 3/4
5XL – 69-70 8 3/4-8 3/4 27 1/4-27 5/8
Helmet Size Centimeter Hat Size Inches
*** Please see below for Size chart specific to RPHA Series, FG-Jet, FG-17Model Helmets ***

HJC Youth Helmet Size Chart
Helmet Size Centimeter Hat Size Inches
Youth S 49-50 6 1/8-6 1/4 19 1/4-19 3/4
Youth M 51-52 6 3/8-6 1/2 20-20 1/2
Youth L 53-54 6 5/8-6 3/4 20 7/8-21 1/4
Youth S/M 49-50 6 1/8-6 1/4 19 1/4-19 3/4
Youth L/XL 51-52 6 3/8-6 1/2 20-20 1/2

HJC RPHA Series, FG-Jet, FG-17 Helmet Size Chart
Helmet Size Centimeter Hat Size Inches
XS – Extra-Small 54-55 6 3/4-6 7/8 21 1/4-21 5/8
SM – Small 55 – 56 6 7/8 – 7 21 5/8 – 22
MD – Medium 57 – 58 7 1/8 – 7 1/4 22 1/2 – 22 7/8
LG – Large 58-59 7 1/4-7 3/8 22 7/8-23 1/4
XL – Extra-Large 60-61 7 1/2-7 5/8 23 5/8-24
XXL – Extra-Extra-Large 62-63 7 3/4-7 7/8 24 3/8-24 3/4
3XL – 64-65 8-8 1/8 25 1/4-25 5/8

Thirty Thousand Helmets on Amazon. Shop Now!

How to Select a Motorcycle Helmet

How to Fit a Motorcycle Helmet

Screenshot of the Shop dot Rands Gear dot com website
SHOP-NOW

Rands Motorcycle Gear Sprocket logo with orange gear and black text