The Troy Lee Designs D4 Composite Helmet is built for riders who push hard, ride fast, and demand confidence when things get serious. Using aerospace-inspired shell design and advanced materials, the D4 Composite delivers downhill-level protection in a lightweight package weighing just 1050g. It’s aggressive, breathable, and designed to stay comfortable through long park laps, race runs, and full days on the mountain. The Mips® C2 protection system adds an extra layer of rotational impact safety, while 20 high-flow vents keep air moving when the riding heats up. Inside, antimicrobial X-static® and XT2® padding helps keep things fresh, and the contoured emergency-release cheek pads add comfort and practicality when it matters most. Fast lines. Big features. Full confidence. Key Features Lightweight composite construction – aerospace-inspired shell design weighing just 1050g Mips® C2 protection – added rotational impact safety for aggressive gravity riding Maximum airflow – 20 intake and exhaust vents keep cooling air moving through the helmet Race-ready comfort – antimicrobial padding and emergency-release cheek pads for all-day wearability
