Aheadset ZS Zero Stack Headset

• The Zero Stack features cups and cones that work together with a simple O-ring to seal out contaminants and increase the headset's life expectancy.
• Deep insertion depth and 3mm lead-in for easy installation
• Features 1-1/8" high-complement caged ball bearings
• The cone and crown race are the same part creating mirror top and bottom cup assemblies
• The compression ring is integrated into the top cover creating one simple, light part
• LubeAlarm seals audibly alert the rider when more grease is needed in the headset, extending headset life
• 1-1/8" Threadless
• Black
• 130.0 g