TLD D4 Composite MIPS Helmet Size:M/L ZS49 will take a 41mm

ZS49 will take a 41mm bearing

This feature is especially useful for analyzing stats from different segments of your ride

Water Rating - IPX7 (submerged in water up to 1 meter for 30 minutes without any damage)

allowing you to switch bikes seamlessly without re-pairing sensors—just switch the bike profile

Ultegra BR-R8070

TLD D4 Composite MIPS Helmet Size:M/L ZS49 will take a 41mmBuilt 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 and XT2 anti