The Troy Lee Designs A2 Mips Dropout Helmet is constructed from an aerospace filament reinforced shell liner, making it a lightweight and versatile helmet designed for all-terrain. It features 7 vacuum outlets and large front and rear passages for increased airflow and moisture wicking, keeping your head cool and dry as you shred it up on the trails. The large eye port provides ample clearance for your glasses or goggles, providing multiple configurations for storage.
Multi-directional Impact Protection System (MIPS) is a revolutionary technology that lets the helmet slide relative to the head, adding more protection against rotational violence to the brain caused by angled impacts.
Huge air intakes 25% larger than a1 - connected to massive exhaust ports through deep internal channels provide powerful cooling efficiency
Updated X-Static® pure silver comfort liner with more material for comfort delivers high-performance odor protection and quick-dry moisture wicking
Mips brain protection system reduces rotational forces to the brain in some crash scenarios
Dual-density eps co-molded with eps for state-of-the-art impact energy management at low and high crash speeds as well as everything in between
16% more eps+epp in the frontal lobe and raised eps splines to provide more protection in the common impact zones
Aerospace filament reinforced polycarbonate shell
Head Circumference (in)
Head Circumference (cm)
7 1/8-7 3/8
How to Measure To find your perfect fit, measure the circumference of your head just above your ears and eyebrows using a cloth tape measure or a piece of string and a ruler. Use the chart above to determine the proper helmet size for you.
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