- A collarbone suspension system improves safety by directing pressure away from the collarbone in case of any tumbles.
- As a result, The D4 has the most protective energy system Troy Lee Designs has ever given its riders. The downhill, freeride, and BMX helmet is certified to CPSC 1203, CE EN1078, ASTM F1952 (DH), and ASTM 2032 (BMX) safety standards.
- Aerospace fibreglass composite shell
- MIPS Brain Protection System
- Collarbone suspension system
- Ventilation channels and headliners promote airflow
- Break-away visor screws
- Quick-release XT2 3D cheek pads and X-static/XT2 washable liner
- Includes TLD drawstring helmet bag
- 1050g
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