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Troy Lee Designs D4 Composite MTB Helmet Shadow Blue
Troy Lee Designs D4 Composite MTB Helmet Shadow Blue
Shadow Blue
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Troy Lee Designs D4 Composite MTB Helmet Shadow Blue
Troy Lee Designs D4 Composite MTB Helmet Shadow Blue

Troy Lee Designs D4 Composite MTB Helmet

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It wasn't easy to improve upon the class-leading design and function of their D3 helmet, but Troy Lee Designs made it happen. Built with an aerospace shell design and materials, they were able to get the D4 Composite helmet to 1050 grams without sacrificing any strength. The MIPS C2 protection system is used to add an additional layer of safety in the event of a fall.

For comfort, the D4 Comp routes cooling air through a front air intake system that flows through the polymer center and power grid side mesh keeping your head cooler during the ride. X-static® and XT2® anti-microbial/anti-odor padding keep the inside of the helmet a much nicer place to be.


  • MIPS Brain Protection 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
  • Strategically placed interior chinbar shock pads for comfort and durability
  • Quick-release and contoured 3D cheek pads for emergency helmet removal
  • Purpose-built internal cavities for audio integration
  • Stainless steel chinstrap D-rings are light and strong
  • Includes TLD drawstring helmet sock
  • Not intended for use with motorized vehicles

  • Free Exchanges: This product qualifies for free exchanges within the first 60 days after order. We'll cover the shipping both ways for US customers if you need a different size and/or color of this product. Returned product must be in new condition with all labels and packaging. Free exchanges apply only for product in stock or available for backorder.

    B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.

    The product weight specified is an approximate weight based on the manufacturer's specifications (if available) or our measurement of one or two examples. For most products, the weight will typically vary by 5% to 10%.

    Troy Lee Designs D4 Composite MTB Helmet
    Other styles of this product are available.

    Certification: CPSC 1203, CE EN 1078:2002 A1:2012 ASTM F1952-15, ASTM F2032-15, ASTM F2040-11 

    Vents: 20 

    Discipline: Downhill Mountain Biking 

    Safety: MIPS Brain Protection System 

    Liner: X-static and XT2 anti-microbial/anti-odor padding 

    Weight: 1050 grams (approx. for size L) 

    Mfg PartNum: 140966012 

    Mfg PartNum: 140966015 

    Mfg PartNum: 140967002 

    Mfg PartNum: 140967005 

    Mfg PartNum: 140437012 

    Stealth Grey - Medium

    Mfg PartNum: 140437013 

    Stealth Grey - Large

    Mfg PartNum: 140437014 

    Stealth Grey - X-Large

    Mfg PartNum: 140437015 

    Exile Black - Medium

    Mfg PartNum: 140966013 

    Exile Black - Large

    Mfg PartNum: 140966014 

    Shadow Blue - Medium

    Mfg PartNum: 140499003 

    Shadow Blue - Large

    Mfg PartNum: 140499004 

    Shadow Blue - X-Large

    Mfg PartNum: 140499005 

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    *Orders received before 3:00PM Pacific time are shipped the same day (Mon-Fri). Orders over $50
    are shipped free (USA only, excluding AK and HI). Some exceptions apply. See Shipping for details. 93


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