Bell Helmets Size Charts

Bell 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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Mag-9, Moto-9, Moto-10, Revolver EVO, Rogue	Custom 500, Moto-3, Qualifier, Riot, Scout	Star, Pro Star, Race Star
Bullitt	Bullitt GT	RS-2
MX-9	MX-10	Youth MX-10
Pit Boss	SRT	Broozer
Eliminator, Eliminator Carbon	TX501	Lithium, Lithium MIPS
Youth Moto-9

Mag-9, Moto-9, Moto-10, Revolver EVO, Rogue

These models feature a versatile fitment range. Note that some specific shell sizes may vary slightly in external dimensions. Ideal for both street and off-road applications.

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Size	Circumference (cm)	Hat size (in)	Cheek Pad Size (mm)
XS	54 - 55	6 3/4" - 6 7/8"	45
S	55 - 56	6 7/8" - 7"	40
M	57 - 58	7 1/8" - 7 1/4"	40
L	58 - 59	7 1/4" - 7 3/8"	35
XL	60 - 61	7 1/2" - 7 5/8"	35
2XL	62 - 63	7 3/4" - 7 7/8"	30

Custom 500, Moto-3, Qualifier, Riot, Scout

Designed for a precise and comfortable fit. Refer to this chart for accurate sizing across various head shapes and dimensions.

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Size	Circumference (cm)	Hat size (in)	Cheek Pad Size (mm)
XS	53 - 54	6 3/4" - 6 7/8"	50
S	55 - 56	6 7/8" - 7"	40
M	57 - 58	7 1/8" - 7 1/4"	50
L	59 - 60	7 1/4" - 7 3/8"	40
XL	61 - 62	7 1/2" - 7 5/8"	45
2XL	63 - 64	7 3/4" - 7 7/8"	35
3XL	65 - 66	8" - 8 1/4"	35

Star, Pro Star, Race Star

Engineered for high-performance and stability. A tight, secure fit is essential for safety at higher speeds and technical terrain.

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Size	Circumference (cm)	Hat size (in)	Cheek Pad Size (mm)
XS	53 - 54	6 5/8" - 6 3/4"	35
S	55 - 56	6 7/8" - 7"	35
M	57 - 58	7 1/8" - 7 1/4"	35
L	59 - 60	7 3/8" - 7 1/2"	35
XL	61 - 62	7 5/8" - 7 3/4"	40
2XL	63 - 64	7 7/8" - 8"	35

Bullitt

Classic aesthetics meets modern protection. Ensure proper sizing to maintain the helmet's iconic silhouette and safety standards.

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Size	Circumference (cm)	Hat size (in)	Cheek Pad Size (mm)
XS	54 - 55	6 3/4" - 6 7/8"	35
S	55 - 56	6 7/8" - 7"	30
M	57 - 58	7 1/8" - 7 1/4"	30
L	58 - 59	7 1/4" - 7 3/8"	25
XL	60 - 61	7 1/2" - 7 5/8"	30
2XL	62 - 63	7 3/4" - 7 7/8"	25

Bullitt GT

Enhanced for touring comfort and safety. Accurate sizing ensures optimal airflow and noise reduction during long rides.

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Size	Circumference (cm)	Hat size (in)	Cheek Pad Size (mm)
XS	53 - 54	6 5/8" - 6 3/4"	45
S	55 - 56	6 7/8" - 7"	35
M	57 - 58	7 1/8" - 7 1/4"	45
L	59 - 60	7 1/4" - 7 3/8"	35
XL	61 - 62	7 1/2" - 7 5/8"	45
2XL	63 - 64	7 7/8" - 8"	35

RS-2

Versatile performance for every rider. Refer to this chart to find your ideal fit for both commuting and weekend tours.

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Size	Circumference (cm)	Hat size (in)	Cheek Pad Size (mm)
XS	54 - 55	6 3/4" - 6 7/8"	30
S	55 - 56	6 7/8" - 7"	35
M	57 - 58	7 1/8" - 7 1/4"	30
L	58 - 59	7 1/4" - 7 3/8"	35
XL	60 - 61	7 1/2" - 7 5/8"	30
2XL	62 - 63	7 3/4" - 7 7/8"	35

MX-9

Rugged protection for off-road environments. A secure fit is necessary to handle vibration and impact on technical trails.

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Size	Circumference (cm)	Hat size (in)	Cheek Pad Size (mm)
XS	53 - 54	6 5/8" - 6 3/4"	40
S	55 - 56	6 7/8" - 7"	35
M	57 - 58	7 1/8" - 7 1/4"	40
L	59 - 60	7 3/8" - 7 1/2"	35
XL	61 - 62	7 5/8" - 7 3/4"	35
2XL	63 - 64	7 7/8" - 8"	30

MX-10

Professional-grade off-road protection. Precise fitment minimizes movement during aggressive riding and impact scenarios.

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Size	Circumference (cm)	Hat Size (in)	Cheek Pad Size (mm)
XS	53 - 54	6 3/4" - 6 7/8"	35
S	55 - 56	6 7/8" - 7"	40
M	57 - 58	7 1/8" - 7 1/4"	40
L	59 - 60	7 1/4" - 7 3/8"	35
XL	61 - 62	7 1/2" - 7 5/8"	40
2XL	63 - 64	7 7/8" - 8"	35

Youth MX-10

Proper sizing is critical for youth protection. Ensure a snug fit to maintain maximum safety and comfort for young riders.

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Size	Circumference (cm)	Hat Size (in)	Cheek Pad Size (mm)
S	49 - 51	6" - 6 3/8"	45
M	51 - 52	6 3/8" - 6 1/2"	45
L	52 - 53	6 1/2" - 6 5/8"	40

Pit Boss

Lightweight open-face comfort. Accurate sizing across head shapes ensures the helmet sits correctly for maximum visibility and safety.

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Size	Circumference (cm)	Hat size (in)	Cheek Pad Size (mm)
XS	53 - 56	6 7/8" - 7"	50
S	53 - 56	6 7/8" - 7"	40
M	56 - 58	7 1/8" - 7 1/4"	50
L	58 - 60	7 1/4" - 7 3/8"	40
XL	61 - 63	7 1/2" - 7 5/8"	45
2XL	61 - 63	7 1/2" - 7 5/8"	35
3XL	63 - 64	7 7/8" - 8 1/4"	35

SRT

Built for the urban landscape. Refer to this chart for a reliable fit that balances protection with all-day comfort.

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Size	Circumference (cm)	Hat Size (in)	Cheek Pad Size (mm)
XS	53 - 54	6 5/8" - 6 3/4"	40
S	55 - 56	6 7/8" - 7"	35
M	57 - 58	7 1/8" - 7 1/4"	40
L	59 - 60	7 3/8" - 7 1/2"	35
XL	61 - 62	7 5/8" - 7 3/4"	35
2XL	63 - 64	7 7/8" - 8"	30
3XL	65 - 66	8 1/8" - 8 1/4"	25

Broozer

Modular versatility for varied riding styles. Ensure a snug fit to maintain security in both full-face and open-face modes.

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Size	Circumference (cm)	Hat Size (in)	Cheek Pad Size (mm)
XS	53 - 54	6 5/8" - 6 3/4"	50
S	55 - 56	6 7/8" - 7"	45
M	57 - 58	7 1/8" - 7 1/4"	50
L	59 - 60	7 1/4" - 7 3/8"	45
XL	61 - 62	7 1/2" - 7 5/8"	45
2XL	63 - 64	7 7/8" - 8"	40

Eliminator, Eliminator Carbon

Aggressive style with premium protection. Refer to these dimensions to find the perfect fit for this high-performance shell.

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Size	Circumference (cm)	Hat Size (in)	Cheek Pad Size (mm)
XS	53 - 54	6 5/8" - 6 3/4"	45
S	55 - 56	6 7/8" - 7"	40
M	57 - 58	7 1/8" - 7 1/4"	35
M/L	58 - 59	7 1/4" - 7 3/8"	40
L	59 - 60	7 3/8" - 7 1/2"	40
XL	61 - 62	7 1/2" - 7 5/8"	35
2XL	63 - 64	7 3/4" - 7 7/8"	30
3XL	65 - 66	8 1/8" - 8 1/4"	25

TX501

Modern features in a classic open-face design. Sizing is key to ensuring the helmet and visor function optimally together.

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Size	Circumference (cm)	Hat Size (in)
XS	53 - 54	6 5/8" - 6 3/4"
S	55 - 56	6 7/8" - 7"
M	57 - 58	7 1/8" - 7 1/4"
L	59 - 60	7 3/8" - 7 1/2"
XL	61 - 62	7 5/8" - 7 3/4"
2XL	63 - 64	7 7/8" - 8"

Lithium, Lithium MIPS

Advanced safety with integrated protection. Accurate fitment ensures the internal safety systems function as engineered.

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Size	Circumference (cm)	Hat Size (in)
XS	53 - 54	6 5/8" - 6 3/4"
S	55 - 56	6 7/8" - 7"
M	57 - 58	7 1/8" - 7 1/4"
L	59 - 60	7 1/4" - 7 3/8"
XL	61 - 62	7 1/2" - 7 5/8"
2XL	63 - 64	7 3/4" - 7 7/8"
3XL	64 - 66	8 1/8" - 8 1/4"

Youth Moto-9

Specifically sized for younger riders. A precise, snug fit is vital for maximum protection and rider confidence.

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Size	Circumference (cm)	Hat size (in)	Cheek Pad Size (mm)
S/M	49 - 51	6 1/8" - 6 3/8"	60
L/XL	51 - 53	6 3/8" - 6 5/8"	50

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