Troy Lee Designs D4 Composite Stealth MIPS Adult MTB Helmets Harley-Davidson 883 Hugger XLH 1999 Parts Available in various sizes

Available in various sizes

0101-17423

0101-16968

White / Red

Youth sized shell and sizing designed for smaller heads

Troy Lee Designs D4 Composite Stealth MIPS Adult MTB Helmets Harley-Davidson 883 Hugger XLH 1999 Parts Available in various sizesTroy Lee Designs D4 Composite Stealth MIPS Adult MTB Helmets Always Evolving. Built with an aerospace shell design and materials, we were able to get the D4 Composite helmet to 1050 grams without sacrificing any strength. Mips C2 protection system is used to add an additional layer of safety in the event of a fall. For comfort, the D4 Composite routes cooling air through a front air intake system that flows through the polymer center and power grid