Troy Lee Designs D4 Carbon Stealth MIPS Adult MTB Helmets perkun Alpinestars polyurethane (PU) knuckle protection

Alpinestars polyurethane (PU) knuckle protection for superior impact and abrasion resistance

Double D-rings closure

Harley-Davidson Softail FLSTF Fat Boy 1992

2 shell sizes (XS-MD and LG-2XL)

Troy Lee Designs D4 Carbon Stealth MIPS Adult MTB Helmets perkun Alpinestars polyurethane (PU) knuckle protectionTroy Lee Designs D4 Carbon Stealth MIPS Adult MTB Helmets 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