Troy Lee Designs D4 Composite Full Face Mountain Bike Helmet - Lightweight MIPS EPP EPS Protection for Downhill DH BMX MTB Racing - Max Ventilation - Adult Unisex (Team Sram White/Glo Red, XX-Large) - Perfect for Trail Riding, Enduro & Extreme Mountain Biking Adventures

Troy Lee Designs D4 Bike Helmet The reigning king of full-face helmets, the D4 range expands with a Polyacrylite model packing the same safety and comfort features as the premium carbon and composite models into a price-conscious shell. Details make the D4 the most coveted full-face in mountain biking, including MIPS C2 brain protection, an air intake system for ventilation, and an unmatched anatomical fit. Troy Lee Designs D4 Helmet: Legend Redesigned The Daytona Helmet changed everything. It’s the most iconic, most storied, and most chosen Downhill, Freeride, and BMX race helmets in bicycling history. First introduced in 1996, the legendary Daytona lead the modern era of mountain biking and BMX with a magical blend of style and innovation. The Daytona and its successors have been worn by more MTB and BMX heroes—and have collected more titles, medals and accolades, and YouTube views than any other helmet in history. The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked. Troy Lee Designs D4 Helmet: Highlight Reel The most iconic, most storied and most chosen Downhill, Freeride and BMX race helmets in bicycling history. The Daytona Series changed everything. The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked. Mountain Bike Helmets D4 Helmet Buying Options Stage Helmet Buying Options A3 Helmet Buying Options Flowline Helmet Buying Options Flowline SE Helmet Buying Options Customer Reviews — — 5.0 out of 5 stars 10 5.0 out of 5 stars 3 — Price — $319.99$319.99 — — $159.99$159.99 Mountain Bike Discipline Downhill, BMX Enduro Trail Trail Trail, eMTB MIPS ✔ ✔ ✔ ✔ ✔ EPP Chin Bar ✔ ✔ ✘ ✘ ✘ Adjustable Visor ✔ ✔ ✔ ✔ ✔ Youth Size Available ✘ ✘ ✘ ✔ ✘ What is MIPS ? MIPS is a safety technology that adds a low-friction layer inside the helmet that can move slightly during an impact, helping to reduce the rotational force on the head and lowering the risk of brain injury. Can I purchase helmet accessories and parts separately? Yes. We offer a full range of replacement parts, including visors, padding, and more.