Bell RS7-K Ultra Carbon Karting Helmet - K2025 / FIA8878

Name: Bell RS7-K Ultra Carbon Karting Helmet - K2025 / FIA8878
Brand: Bell
Price: 1299.95 USD
Availability: OutOfStock
Rating: 5.0 (4 reviews)

$1,299.95 USD

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Size 54 55 56 57 58 59 60 61 61+

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The Bell RS7‑K Ultra Carbon Helmet – K2025 delivers elite-level protection and performance for competitive karting. Featuring a featherweight carbon shell, it meets both Snell K2025 and FIA 8878‑2024 certifications. Engineered with an optical‑grade anti‑fog visor, advanced ventilation, and SmartLock shield system, it’s built for karters who demand pro‑level performance and uncompromising safety.

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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