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Troy Lee Designs D4 Composite Bike Helmet

sku# 172485
Troy Lee Designs - D4 Composite Bike HelmetTroy Lee Designs - D4 Composite Bike HelmetTroy Lee Designs - D4 Composite Bike HelmetTroy Lee Designs - D4 Composite Bike Helmet
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Prices displayed in U.S. dollars at checkout.

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Product Info

Take a look around: the Troy Lee Designs D4 Composite Bike Helmet is on some of the most recognizable heads on the hill. From freestyle riders who launch themselves upside down on purpose to racers who pay their mortgages by going as fast as possible on a bike, the D4 is the choice of professionals in every genre. At 1050 grams, it's an ultra-lightweight full-face that's a joy to wear. There's nothing better.

Product Details


Aerospace Fiberglass Composite Shell


MIPS (Multi-Directional Impact Protection System)MIPS stands for Multi-directional Impact Protection System. It 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.

Innovative ConstructionWith in-mold PC around vent openings and exposed EPS, strength and durability have been increased.


Quick Release XT2 3D Cheek Pads

X-Static / XT2 Liner for Optimized Fit


VentilationLarge front and rear air passages coupled with deep internal channeling for maximum airflow and cooling efficiency.

TLD Drawstring Bag Included

Additional Features

Break-Away Anodized Aluminum Visor Screws

Safety Standards

CertificationsCPSC 1203, CE EN 1078, ASTM F1952-DH, ASTM 2032-BMX


  • Material: EPS, Fiberglass
  • Biking Type: Mountain
  • Helmet Style: Full Face
  • Helmet Venting: Fixed Venting
  • Audio: Not Included
  • Visor: Yes
  • Removable Ear Pads: Yes
  • MIPS: Yes
  • Weight (g): 1050
  • Warranty: 3 Years More 
Weight (g) 1050

Other Notes

Troy Lee Designs products can only be shipped within the United States and Canada



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