Troy Lee Designs D3 MTB Full Face Cycling Helmet

What are the delivery costs?

We offer Free UK Mainland Delivery on all orders over £20. Products shipped to outlying UK regions are excluded from free shipping.

Standard delivery is normally 2 - 5 working days.

Please view our delivery page for full information on UK and international delivery costs.

Design and Function

It wasn't easy to improve upon the class-leading design and function of our D2 helmet, but we made it happen. By integrating next-level safety devices and making functional improvements, we raised the bar for head protection in the genre with our D3.

Riders like Brendan Fairclough, Aaron Gwin, Steve Peat, Brandon Semenuk and Cam Zink refuse to wear anything else when they pedal. With styles and colors to fit any personality, the only question is: Which one is for you?


Rated #1 full face helmet 3 years in a row in reader poll (2013, 2014, 2015) - vitalmtb.com and pinkbike.com

Dual Density Protection


D3 Core Features:

  • Technologically advanced composite shell construction
  • Digital wind tunnel-tested, aerodynamic shell design
  • Revolutionary injection-molded air intake system
  • 20 high-flow intake and exhaust ports for maximum ventilation
  • Added eps and new headform shape for improved impact performance
  • Full incremental sizing for greater range of fitment
  • Deep eps channeling for optimal airflow
  • Strategically placed interior chinbar shock pads for comfort and durability
  • Removable, washable padded liner with coolmax™ and dri-lex™ moisture wicking materials
  • Contoured 3d cheekpads fit anatomically
  • Quick-release cheek pads for emergency helmet removal
  • Purpose-built internal cavities for audio integration
  • Titanium hardware for reduced weight
  • Includes 2 lightweight, streamlined visors and a helmet bag
  • Exceeds bicycle certifications: CPSC 1203, CE EN 1078:2002+A1:2012 ASTM F1952-15, ASTM F2032-15, ASTM F2040-11
  • Not intended for use with motorized vehicles

Occasionally, without notice, manufacturers change product design and/or specifications.