Troy Lee Designs D4 Composite Helmet w/Mips - Frames Size:LG with MMX Cassette SRAM 1270

with MMX Cassette SRAM 1270 Transmission Cassette

Top Tube Length (Hi/Lo) 570/571 594/594 612/613 637/638 666/667

Low profile shape allows for snag-free maneuvering on the saddle

Gone are the days of blown out hands and varying degrees of arm pump after a day on your new 35mm bore oversized super stiff handlebar

This means that for every frame

Troy Lee Designs D4 Composite Helmet w/Mips - Frames Size:LG with MMX Cassette SRAM 1270Always 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