Name: Arai Quantum-X Helmet
Brand: Cycle Gear
SKU: arai-helmets-2496
Availability: InStock

Arai Quantum-X Helmet

Size chart

Clothing Size Conversion Chart
Category	US	EU	UK	Chest (in)	Waist (in)	Hips (in)
Men	XS	44	34	32-34	26-28	33-35
	S	46	36	34-36	28-30	35-37
	M	48	38	38-40	32-34	39-41
	L	50	40	42-44	36-38	43-45
	XL	52	42	46-48	40-42	47-49
Women	XS	32	6	31-32	24-25	33-34
	S	34	8	33-34	26-27	35-36
	M	36	10	35-36	28-29	37-38
	L	38-40	12-14	37-39	30-32	39-41
	XL	42	16	40-42	33-35	42-44
Youth	XS	128	7	26-28	23-24	26-28
	S	134	8	28-30	24-25	28-30
	M	140	10	30-32	25-26	30-32
	L	146	12	32-34	26-27	32-34
	XL	152	14	34-36	27-28	34-36

Pants Size Conversion Chart
Category	US	EU	UK	Waist (in)	Hip (in)	Inseam (in)
Men	28	44	28	28	34	30
	30	46	30	30	36	31
	32	48	32	32	38	32
	34	50	34	34	40	33
	36	52	36	36	42	34
Women	0	32	4	24	34	30
	2	34	6	25	35	30
	4	36	8	26	36	31
	6	38	10	27	38	32
	8	40	12	28	40	32

Shoes Size Conversion Chart
Category	US	EU	UK	Foot Length (in)
Men	6	39	5.5	9.25
	7	40	6.5	9.625
	8	41	7.5	10
	9	42	8.5	10.25
	10	43	9.5	10.625
	11	44	10.5	11
	12	45	11.5	11.25
	13	46	12.5	11.625
Women	5	35	2.5	8.5
	6	36	3.5	8.875
	7	37	4.5	9.25
	8	38	5.5	9.625
	9	39	6.5	10
	10	40	7.5	10.25
	11	41	8.5	10.625
	12	42	9.5	11
M (Unisex)	5	37	4.5	8.75
	6	38	5.5	9
	7	39	6.5	9.5
	8	40	7.5	10
	9	41	8.5	10.25
	10	42	9.5	10.625
	11	43	10.5	11
	12	44	11.5	11.25

color

Aluminum Silver

Black Frost

Diamond Black

Diamond White

Pearl Black

White

Size

Clear

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Arai Quantum X Helmet The Quantum X has a lot to live up to given the reputation which follows the long time classic RX-Q. Luckily, Arai is not one to skimp and has again improved upon a helmet which has lived on the top tier for many years. The Quantum X helmet brings back the widely loved fit of the RX-Q, which features a balanced shape with a little extra room on the sides, making it a great fit for those with a slightly more round head shape. If you have a more intermediate oval head shape, you can simply install a Corsair X head liner to convert the Quantum X into a slightly longer fit. PB SCLC Shell: Peripherally Belted – Super Complex Laminate Construction shell Design combines multiple materials and techniques created internally by Arai that deliver both performance and affordability Shell has superb tensile strength due to a variety of carefully-positioned materials and light weight resin VAS Shield System: VAS (Variable Axis System) shield and side pods are exclusive to the Arai Corsair X Helmet Variable axis (moving pivot point) allows shield mount position to be lower than most helmets Dual function lever releases both the side pod and the face shield for quick and simple face shield removal VAS Shield Latch System: Captures and holds the face shield closed securely Provides a de-mist position to slightly crack the shield open Larger latch design allows for intuitive and seamless operation VAS V MV Shield: VAS MAX Vision face shield Provides excellent visibility in all seasons Includes clear anti-fog Pinlock insert Ventilation: QVF and QVR upper ventilation ducts offer adjustment and airflow performance Vents are easy to operate with gloved hands Arai’s Proprietary Liner: Fully removable and soft interior liner and cheek pads Made from odor-resistant material which helps maintain neutral acidity levels close to human skin Adjustable temple padding to allow for a customized fit Neckroll is removable and has additional exhaust channels to remove interior heat Safety: Snell M2025 certified and DOT approved Cheek pads have the Emergency Release Tab feature Helmet Finishes: Pearl – Gloss Frost – Semi-matte Diamond – Semi-sparkle