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Troy Lee Designs D4 Composite Lined up Helmet
Full-face protection for demanding terrain
The Troy Lee Designs D4 Composite Lined Up is designed for riders looking for full-face protection for downhill, BMX and more demanding mountain bike terrain. Its composite shell keeps the weight around 1,050 g, while the Mips® C2 system adds a layer of protection designed to help manage certain rotational forces during an impact.
Airflow built for hard efforts
The D4 features 20 vents positioned throughout the front, top and rear of the helmet. This layout helps move air through the helmet and release heat during climbs, descents and long sessions at the bike park.
An interior designed around comfort
The contoured 3D cheek pads follow the shape of the face and can be quickly removed in an emergency. X-Static® and XT2® materials are also used throughout the interior to help manage odor and maintain a fresher feel. Incremental sizing allows the internal volume to be fine-tuned for a more personalized fit.
Features of the Troy Lee Design D4 Composite Lined up helmet
- Composite shell construction
- Mips® C2 rotational impact protection system
- Approximately 1,050 g
- 20 intake and exhaust vents
- EPP chin bar impact system
- Added EPS and updated headform for impact performance
- Contoured 3D cheek pads with quick-release system
- X-Static® and XT2® interior materials
- Incremental sizing for a more precise fit
- Stainless steel D-rings
- Internal cavities for audio integration
- Includes TLD helmet storage bag
- CPSC 1203, CE EN 1078, ASTM F1952-15, ASTM F2032-15 and ASTM F2040-11 certifications
