Stilo ST6 FN Zero Carbon Racing Helmet - FIA8860

Name: Stilo ST6 FN Zero Carbon Racing Helmet - FIA8860
Brand: Stilo
Price: 5699.95 USD
Availability: InStock
Rating: 4.5 (2 reviews)

$5,699.95 USD

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Size 54 55 56 57 58 59 61 63 64

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The Stilo ST6 FN Zero is a top-tier carbon helmet built to FIA 8860-2018 standards for pro-level motorsport. Featuring a PURO technology carbon shell, it's ultra-lightweight without clear coat for reduced fatigue and maximum strength. Its streamlined, sideport-free design enhances aerodynamics, while the redesigned six-vent system boosts airflow and cooling. A dual-locking visor and anti-fog treatment ensure clear vision under pressure. Compatible with hydration and comms systems, the ST6 FN Zero is the ideal choice for serious racers seeking elite protection and performance.

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Head measurements vary by brand. Measure the widest part of your head above the ears.

Size	Inches	CM	Hat Size
XS	20-7/8 - 21-1/4	53-54	6-5/8, 6-3/4
S	21-5/8 - 22	55-56	6-7/8, 7
M	22-3/8 - 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 - 24-3/8	61-62	7-5/8, 7-3/4

Size	Inches	CM	Hat Size
XXS	21-1/2 - 21-5/8	54-55	6-3/4, 6-7/8
XS	22	56	7
S	22-3/8	57	7-1/8
M	22-3/4 - 23-1/4	58-59	7-1/4, 7-3/8
L	23-5/8	60	7-1/2
XL	24 - 24-3/8	61-62	7-5/8, 7-3/4
XXL	24-3/4 - 25-1/4	63-64	7-7/8, 8
3XL	25-5/8 - 26	65-66	8-1/8, 8-1/4
4XL	26-3/8 - 26-3/4	67-68	8-3/8, 8-1/2

Size	Inches	CM	Hat Size
XXS	21-1/2 - 21-5/8	54-55	6-3/4, 6-7/8
XS	22	56	7
S	22-3/8	57	7-1/8
M	22-3/4 - 23-1/4	58-59	7-1/4, 7-3/8
L	23-5/8	60	7-1/2
XL	24 - 24-3/8	61-62	7-5/8, 7-3/4
XXL	24-3/4 - 25-1/4	63-64	7-7/8, 8

Size	Inches	CM	Hat Size
XS	20-7/8 - 21-1/4	53-54	6-5/8, 6-3/4
S	21-5/8 - 22	55-56	6-7/8, 7
M	22-3/8 - 22-3/4	57-58	7-1/8, 7-1/4
L	23-1/8 - 23-1/2	59-60	7-3/8, 7-1/2
XL	23-7/8 - 24-1/4	61-62	7-5/8, 7-3/4
XXL	24-3/4 - 25-1/8	63-64	7-7/8, 8

Size	Inches	CM	Hat Size
XS	21-1/4 - 21-5/8	54-55	6-3/4, 6-7/8
S	22 - 22-1/2	56-57	7, 7-1/8
M	22-7/8 - 23-1/4	58-59	7-1/4, 7-3/8
L	23-5/8 - 24	60-61	7-1/2, 7-5/8
XL	24-3/8 - 24-3/4	62-63	7-3/4, 7-7/8
XXL	25-1/4 - 25-5/8	64-65	8, 8-1/8

Size	Inches	CM	Hat Size
XXS	21-1/2 - 21-5/8	54-55	6-3/4, 6-7/8
XS	22	56	7
S	22-3/8	57	7-1/8
M	22-3/4 - 23-1/4	58-59	7-1/4, 7-3/8
L	23-5/8	60	7-1/2
XL	24 - 24-3/8	61-62	7-5/8, 7-3/4
XXL	24-3/4 - 25-1/4	63-64	7-7/8, 8

Size	Inches	CM	Hat Size
XXS	20 - 20-1/2	51-52	6-3/8, 6-1/2
XS	20-7/8 - 21-1/4	53-54	6-5/8, 6-3/4
S	21-5/8 - 22-1/16	55-56	6-7/8, 7
M	22-7/16 - 22-7/8	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 - 24-3/8	61-62	7-5/8, 7-3/4
XXL	24-13/16 - 25-3/16	63-64	7-7/8, 8
3XL	25-1/2+	65+	8-1/8

Size	CM	Hat Size
XS	54	6-3/4
S	56	7
M	59	7-3/8
L	60	7-1/2
XL	61	7-5/8
XXL	63	8

Size	Inches	CM	Hat Size
XS	21.25	54	6-3/4
S	21.65	55	6-7/8
M	22.45	57	7-1/8
L	22.8 - 23.25	58-59	7-1/4, 7-3/8
L+	23.6 - 24	60-61	7-1/2, 7-5/8
XL	24.4	62	7-3/4
XXL	24.8	63	7-7/8

Size	Inches	CM	Hat Size
XS	20-3/4 - 21-1/4	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
M/L*	23 - 23-1/2	59-60	7-3/8, 7-1/2
L	23 - 23-1/2	59-60	7-3/8, 7-1/2
XL	23-7/8 - 24-1/4	61-62	7-5/8, 7-3/4

Actually Measuring Your Head

Use a soft measuring tape (craft store, like $3). Wrap it around the widest part of your dome, forehead to back, and get the same number twice. Use that number to pick your size. Revolutionary, we know. lol.

Guide to Buying a Racing Helmet