Troy Lee Designs D4 AS Composite Black MTB Helmet

THE REIGNING CROWN OF FULL-FACE HELMETS
D4 reigns king atop downhill podiums and freeride events across the globe. Available in carbon and composite, 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 MIPS protection with an EPP chin bar and anatomical cheek pads with emergency release.

MIPS
MIPS Brain Protection System designed to reduce rotational motion transferred to the brain from angled impacts to the head.

Shell
TeXtreme Spread Tow carbon fiber reinforcements in the shell of the new TLD D4 Carbon helmet has helped pare down the weight of the full-face helmet by almost 50 grams without sacrificing strength.

Cheekpads
Anatomical "3D" contoured cheek pads with emergency release system for EMS responders.

Liner
Removable snap-in, washable comfort liner with Coolmax and Dri-Lex moisture-wicking materials.

EPP
EPP (Expanded PolyPropylene) chin bar.

Ventilation
For comfort, the D4 Comp routes cooling air through a front air intake system that flows through the polymer center and power grid side mesh keeping your head cooler during the ride.

WHAT'S IN THE BOX
HELMET BAG
• TLD Factory Pilot Bag

MEDICAL STICKER
• Medical information sticker to insert

OWNERS MANUAL
• All the details on the D4 Carbon Helmet

SPECIFICATIONS
• MIPS brain protection system, reduces rotational forces to the brain in some crash scenarios
• Three shell sizes to more accurately fit a variety of head sizes and rider ages, improving overall safety
• Removable snap-in, washable comfort liner with Coolmax and Dri-lex moisture-wicking materials
• Super light titanium D-rings save weight and have increased material tensile strength
• CPSC 1203*, CE EN1078*, ASTM F1952-DH, ASTM 2032-BMX. *Varies by regional standards