EC, EC-Threaded, IS and ZS headsets are individual models in the A headset system
IS features Cane Creek semi-cartridge lower bearing and caged A headset system upper bearing
Compression ring is integrated into the top cover creating one simple, light part

Technical Details

Product Details

Product Dimensions

Package Dimensions
Width : 2.1 inch
Height : 1.7 inch
Length : 2.1 inch

Item Weight: 4.96 ounce (View shipping rates and policies)
Shipping Weight: 4.8 ounce (View shipping rates and policies)

ASIN : B003YMFJ02