Troy Lee Designs D4 Composite Helmet w/Mips - Frames Size:LG Top Tube Length (Hi/Lo) 570/571

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

with MMX Cassette SRAM 1270 Transmission Cassette

Floating axles provide much smoother suspension movement throughout the entire range of the fork’s travel

SHIMANO ULTEGRA Di2 Rim Brake DUAL CONTROL LEVER 2x12-speed

Troy Lee Designs D4 Composite Helmet w/Mips - Frames Size:LG Top Tube Length (Hi/Lo) 570/571Always 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