Biltwell Helmets Size Charts

Biltwell helmets are designed to fit snug and secure when properly sized. For additional guidance, refer to our helmet sizing guide or contact our customer service team.

ECE R22.06 - Gringo, Gringo S & Gringo SV Helmets

Shop →
Size	Circumference (cm)	Circumference (in)	US Hat Size (Approx)
XS	53 - 54	20 3/4" - 21 1/4"	6 1/2 - 6 3/4
S	55 - 56	21 1/2" - 22.0"	6 7/8 - 7 1/8
M	57 - 58	22 2/5" - 22 17/20"	7 1/8 - 7 3/8
L	59 - 60	23 1/4" - 23 3/5"	7 3/8 - 7 5/8
XL	61 - 62	23 3/4" - 24 1/4"	7 5/8 - 7 7/8
2XL	63 - 64	24 3/8" - 25.0"	7 7/8 - 8 1/8

ECE R22.05 - Bonanza, Gringo, Gringo S, Gringo SV, Lane Splitter Helmets

Shop →
Size	Circumference (cm)	Circumference (in)	US Hat Size (Approx)
XS	53 - 54.25	20 7/8" - 21 3/8"	6 5/8 - 6 7/8
S	54.5 - 55.75	21 1/2" - 22.0"	6 7/8 - 7 1/8
M	56 - 57.25	22 1/8" - 22 5/8"	7 1/8 - 7 3/8
L	57.5 - 58.75	22 3/4" - 23 1/4"	7 3/8 - 7 5/8
XL	59 - 60.25	23 3/8" - 23 7/8"	7 5/8 - 7 7/8
2XL	60.5 - 61.75	24.0" - 24 1/2"	7 7/8 - 8 1/8

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