Cane Creek AER ZS Zero Stack Bicycle Headset Top Assembly 1 1/8 Inch

The Worlds Lightest Headset. By incorporating NorglideR composite bearing technology into a super lightweight design, AER offers more than 50% weight savings over comparable models. Its the ultimate upgrade for cyclists with an eye on weight. Tech: NorglideR Composite Bearing. The AER headset incorporates Saint Gobain Performance Plastics latest innovation in composite bearing technology: NorglideR X2. A revolution in bearing technology, the X2 material sandwiches an aluminum base between a layer of low friction PTFE tape and an elastomeric rubber backing material yielding a composite bearing that weighs scant 1.5g. The Norglide X2 bearing is durable enough to provide over 450 hours of smooth steering