Troy Lee Designs D4 Composite Helmet W/Mips ; Crest Color:Real Teal material 7075-T6 aluminum max extended

material 7075-T6 aluminum max extended length 300mm max insertion length 264mm min

1” on 650B

Wider than triple crankset gearing in 11/32 and 12/36 options

CPSC Safety Standard for Bicycle Helmets for Persons Age 5 and Older

Castelli engineered Air_O Strecth fabric for breathabiity

Troy Lee Designs D4 Composite Helmet W/Mips ; Crest Color:Real Teal material 7075-T6 aluminum max extendedAlways 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 side mesh keeping your head cooler during the ride. X static