ACS Maindrive Headset IS42/25.4|IS42/26 Black CheckoutSpec= (140-170) 30.9x408-438mm this is the lightest performance

this is the lightest performance driven damper yet

}Zipp Vuka Aerobar Extensions - Evo 110 Aluminum High

lightweight aluminum frame is torsionally stiff for efficient skiing

A zippered internal storage pocket and included integrated rain cover add additional value and usability

This freehub supports Kickr Move `18 `20 Edition Kickr Kickr V6 and Kickr Core with most Campagnolo 10 11 and 12 speed cassettes

ACS Maindrive Headset IS42/25.4|IS42/26 Black CheckoutSpec= (140-170) 30.9x408-438mm this is the lightest performanceCNC machined alloy tops with sealed mechanism 45 45 degree bearings Available as 1" (25. 4mm), 1 1 8"(28. 6mm) and 1 1 8" to 1" reducer Model Maindrive IS S. H. I. S. IS42 25. 4 IS42 26 Color Black Weight 93g Size 1" (25. 4Mm) 1"