Troy Lee Designs Helmets Size Charts

Troy Lee 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.

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Men's Helmet - SE3	Men's Helmet - SE4/GP	Men's Helmet - SE5
Youth Helmets

Men's Helmet - SE3
Size	Hat	Circumference (cm)	Circumference (in)
XS	6 5/8 - 6 3/4	53 - 54	20 7/8" - 21 1/4"
S	6 3/4 - 7	54 - 56	21 1/4" - 22"
M	7 - 7 1/4	56 - 58	22" - 22 3/4"
L	7 1/4 - 7 1/2	58 - 60	22 3/4" - 23 5/8"
XL	7 1/2 - 7 3/4	60 - 62	23 5/8" - 24 3/8"
2XL	7 3/4 - 7 7/8	62 - 63	24 3/8" - 24 3/4"

Men's Helmet - SE4/GP

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Size	Hat	Circumference (cm)	Circumference (in)
XS	6 3/4 - 6 7/8	54 - 55	21 1/4" - 21 5/8"
S	6 7/8 - 7	55 - 56	21 5/8" - 22"
M	7 1/8 - 7 1/4	57 - 58	22 3/8" - 22 3/4"
L	7 1/4 - 7 3/8	58 - 59	22 3/4" - 23 1/4"
XL	7 1/2 - 7 5/8	60 - 61	23 5/8" - 24"
2XL	7 3/4 - 7 7/8	62 - 63	24 3/8" - 24 3/4"

Men's Helmet - SE5

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

Youth Helmets

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Size	Hat	Circumference (cm)	Circumference (in)
M	6 1/4 - 6 3/8	50 - 51	19 3/4" - 20 1/8"
L	6 1/2 - 6 5/8	52 - 53	20 1/2" - 20 7/8"

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