Troy Lee Designs – D4 Carbon Optic MIPS Helmet (MTB)

D4 Carbon Optic MIPS Helmet is a Troy Lee Designs mountain bike helmet built for mountain bikers who want full-time confidence. The D4 platform is known for downhill-focused coverage and a locked-in feel when the terrain gets steep and fast. Carbon construction points to a lighter, more premium feel that works well for riders chasing high-end performance. The Optic graphic gives it a distinct finish that stands out in the pits, on the trailhead rack, or in the garage. The MIPS-equipped build adds another layer of confidence for riders who prioritize modern helmet technology.

It is shaped for modern off-road mountain biking, with the secure feel, airflow, and coverage riders look for when the route mixes climbing, descending, and repeated hits through rough sections.

Why We Like It: it fits the way a modern MTB helmet should: secure, ventilated, and ready for real terrain.

Why Itll Work for You: It is easy to match to the rest of your kit and easy to live with between rides, which is exactly what most riders want from an MTB helmet.

Variants / Options: multiple sizes and colorways available; check the selector for current stock.

Key Features:

• D4 reigns king atop downhill podiums and BMX events across the globe. Available in carbon, composite and polyacrylite. Details are what makes the D4 the most coveted full-face in mountain biking. Prioritizing safety while balancing weight through premium construction and materials, D4 incorporates Mipsprotection with an EPP chin bar and anatomical cheek pads with emergency release.
• Mips C2 Rotational Impact Brain Protection System
• UD carbon fiber shell
• Three shell sizes to more accurately fit a variety of head sizes and rider ages
• Anatomical “3D contoured cheek pads with emergency release system for EMS responders
• Removable snap-in, washable comfort liner with Coolmax and Dri-lex moisture-wicking materials
• Super light titanium D-rings
• 1000g
• CPSC 1203*, CE EN1078*, ASTM F1952-DH, ASTM 2032-BMX. *Varies by regional standards