Troy Lee Designs D4 Polyacrylite Shadow 2026 MIPS Adult MTB Helmets Harley-Davidson Fat Bob FXDF 2016 Parts 92% Polyester / 8% Spandex

92% Polyester / 8% Spandex Construction

Convenient Side Pockets: Functional side leg pockets securely hold your phone

the Rideley delivers style and confidence wherever you go

With a carbon aramid fiber shell designed with technologies developed for MotoGP riders

Integrated removable nose guard

Troy Lee Designs D4 Polyacrylite Shadow 2026 MIPS Adult MTB Helmets Harley-Davidson Fat Bob FXDF 2016 Parts 92% Polyester / 8% SpandexTroy 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