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Troy Lee Designs

Troy Lee Designs D4 Carbon MIPS Full Face Helmet

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Available in store

SKU: 13953100

D4 reigns king atop downhill podiums and freeride events across the globe


Available in carbon, details are what makes the D4 the most coveted full-face in mountain biking. Prioritizing safety while balancing weight through premium construction and materials, D4 incorporates MIPS protection with an EPP chin bar and anatomical cheek pads with emergency release.

  • Mips® C2 Rotational Impact Brain Protection System
  • UD carbon fiber shell
  • Different shell sizes to more accurately fit a variety of head sizes and rider ages
  • Anatomical "3D” contoured cheek pads with emergency release system for EMS responders
  • Removable snap-in, washable comfort liner with Coolmax® and Dri-lex® moisture-wicking materials
  • Super light titanium D-rings
  • CPSC 1203*, CE EN1078*, ASTM F1952-DH, ASTM 2032-BMX
    *Varies by regional standards


  • Head Circumference: XS 53-54cm // S 55-56cm // M 57-58cm // L 58-59cm // XL 60-61cm // 2XL 62-63cm
  • Weight: 1000g
  • Item #: 13953100 // 13943700

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