Purpose-built for the street. A new benchmark in comfort, quiet, stability and ventilation. Arai applied the same tireless 24-7 focus devoted to their race helmets to designing it, refining and adapting proven concepts to a new purpose. On the rounder end of the head shape spectrum, the Quantum series has always been the "go-to" helmet of choice. The new Quantum-X brings that shape back in a feature rich package.
The Quantum-X has Arai's Round Oval (RO) interior fit shape.
The Variable Axis System shield mechanism was developed to enhance the shape of the shell, but the easy-to-learn changing mechanism is what most people are raving about. Quick, easy and intuitive.
The new Peripherally Belted - Super Complex Laminate Construction shell design combines multiple materials and techniques created internally by Arai that deliver both performance and affordability.
In keeping with the "improve on what works" mentality at Arai, the new QVF and QVR upper ventilation ducts look familiar but offer more adjustment and better flow-through performance.
The new water-repellent ES Chincover comes installed on the Quantum-X.
Enhancing the egg shape of the helmet, the cover smooths airflow, increases exhaust from the mouth area and reduces wind noise coming up from below.
Good for both cold and warm weather riding and is easy to remove and reinstall as needed.
The anti-microbial liner material on the Quantum-X resists the build up of bacteria and as a result allows your helmet to stay fresher, longer, between cleanings.
VAS-MV Pinlock Anti-Fog Lens:
The Quantum-X comes with the VAS-MV (Max Vision) shield that accepts the new VAS-MV Pinlock lens.
The new Pinlock-120 lens comes with the helmet in the box and ready to install.
Compatible with the VAS-V Pro Shade system (sold separately).
DOT and SNELL 2015 certified.
Note: Fluorescent and/or bright finishes fade over time and exposure to sunlight. This is normal and is not covered by warranty.
A: XSmall to Mediums have 25mm cheek pads the Large and XL are 20mm and XXL is 15mm standard in the helmet.
20" - 20 1/2" (51 - 52 cm)
20 7/8" - 21 1/4" (53 - 54 cm)
6 1/2 - 6 5/8
21 5/8" - 22" (55 - 56 cm)
6 3/4 - 6 7/8
22 1/2" - 22 7/8" (57 - 58 cm)
7 - 7 1/8
23 1/4" - 23 5/8" (59 - 60 cm)
7 1/4 - 7 3/8
24" - 24 3/8" (61 - 62 cm)
7 1/2 - 6 5/8
24 3/4" - 25 1/8" (63 - 64 cm)
7 3/4 - 7 7/8
25 1/2" - 26" (65 - 66 cm)
8 - 8 1/8
1. Measure your head size. To do this, pass a tape measure horizontally around your head at a height of about one inch above your eye brows. When done properly, you will have measured the largest part of your head.
2. Check your measurement with the helmet sizing chart and select the closest size. As the helmet may not always meet your head size exactly, and your head measurement may fall between two sizes, first try the smaller size.
WHEN YOU RECEIVE YOUR HELMET
1. Expand the helmet opening by pulling outwards on each chinstrap, and slide your head into the helmet. If you are unfamiliar with helmets you may be reluctant to pull the helmet down, as it may feel too tight. Even if the helmet is difficult to put on, please use the smallest helmet possible. The helmet should feel snug. If the helmet is not tight, it is too big for you. New helmets will break in and loosen slightly over time.
2. Once the helmet is on:
Check that the helmet inner lining fits snugly all around your head.
Check that the top pad presses on the top of your head.
Check that the cheek pads press up against your cheeks. When you open and close your mouth, you should drag your teeth along the inside of your cheeks.
Check to make sure that you cannot easily slide your finger into the helmet along the side of your temple.
Hold the helmet with one hand on each side. Without moving your head, try to move the helmet up and down, and side to side. You should feel the skin of your head and face being pulled as you try to move the helmet. If you can move the helmet around easily, it is too big. Try a smaller size. Please note that during this check, the chinstraps should be properly fastened.