Troy Lee Designs D4 Polyacrylite Shadow 2026 MIPS Adult MTB Helmets stretch size The rear spoiler and ported

The rear spoiler and ported vents allow for dynamic

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Exclusive compound rubber sole features structured shank reinforcement for added support to the arch area

Now users can keep their face protected from the elements while still being able to breathe

The Ultraflite™’s three-piece Hydradry™ liner offers comfort and moisture control while soft-touch cheek pads ensure a secure

Troy Lee Designs D4 Polyacrylite Shadow 2026 MIPS Adult MTB Helmets stretch size The rear spoiler and portedTroy Lee Designs D4 Polyacrylite Shadow 2026 MIPS Adult MTB Helmets The reigning king of full face helmets, the D4 range expands with a Polyacrylite model packing the same safety and comfort features as the premium carbon and composite models into a price conscious shell. Details make the D4 the most coveted full face in mountain biking, including Mips C2 brain protection, an air intake system for ventilation, and an unmatched anatomical fit. Mips C2