Troy Lee Designs D4 Polyacrylite Downhill HelmetConquer descents with the Troy Lee Designs D4 Polyacrylite helmet. Experience championship-winning safety and elite ventilation at an exceptional value. Featuring a revolutionary collarbone suspension system and 20 high-flow vents, it keeps you cool and protected. Its aerodynamic design, lightweight construction, and comfortable X-Static® padding ensure confidence on every ride. Certified for downhill and BMX, it's your go-to for uncompromising performance.Pro-Level Performance, Accessible to Every RiderThe D4 Polyacrylite brings the legendary safety, design, and attention to detail of Troy Lee Designs´ flagship D4 Carbon helmet to a wider audience. Built to meet the demands of aggressive downhill and park riding, this full-face helmet is meticulously engineered to provide superior protection and comfort without the premium price tag. Every element is designed to enhance your ride, allowing you to push your limits with the confidence that you are wearing world-class protection.Advanced Ventilation for Maximum ComfortStay cool under pressure with an advanced ventilation system that sets a new standard for airflow. The D4 Polyacrylite features 20 high-flow intake and exhaust ports, strategically placed to create a cooling channel of air over your head. Front intake ports work in tandem with the deep EPS foam channels and rear exhaust ports to draw in fresh air and expel heat, ensuring you remain focused and comfortable from the starting gate to the finish line, even on the most demanding runs.Innovative Protection Where It CountsSafety is paramount in the D4's design. A key innovation is the built-in collarbone suspension system, an integrated relief area designed to reduce forces in the event of a crash, providing an additional layer of protection for one of the most commonly injured areas. The chin bar is reinforced with EPP (Expanded Polypropylene) foam for durable, multi-impact protection. Furthermore, the visor features breakaway screws engineered to shear away upon impact, reducing the potential for snagging and exacerbating rotational forces.Unmatched Comfort and FitA lightweight polyacrylite shell construction minimizes weight, reducing neck fatigue and allowing you to ride longer and harder. Inside, the helmet pampers you with premium comfort. The washable X-Static® and XT2® padding provides superior anti-microbial and anti-odor properties, keeping your helmet fresh ride after ride. Anatomically contoured 3D cheek pads offer a secure, race-ready fit and are equipped with a quick-release system for easy emergency removal.---Technical Specifications* Category: Helmets* Subcategory: Downhill Helmets* User: Adult* Shell Material: Synthetic* Ventilation: 20 total high-flow ports for maximum air circulation* Protection System: Integrated collarbone suspension system, EPP-reinforced chin bar* Interior Liner: Removable and washable X-Static® and XT2® anti-microbial liner* Fastening System: Stainless Steel D-Ring closure* Included: TLD drawstring helmet bag* Certifications: Meets or exceeds ASTM F1952 DH, ASTM F2032 BMX, CPSC 1203, CE N1078, AS/NZS 2063