Acros

Headset Lower Cup - ZS66/40

The Acros Headset Lower Cup - ZS66/40 is built for riders who demand precision handling and long-lasting performance from every component on their bike. Designed with angular contact ball bearings, this lower cup provides smooth, consistent steering response and durability that stands up to the toughest rides. Whether refreshing a worn-out setup or completing a custom build, this headset lower delivers the reliability and precision that discerning cyclists expect from Acros.

• ZS66/40 standard ensures a precise fit for compatible head tube and fork combinations.
• Angular contact ball bearings provide smooth steering and improved load distribution.
• Engineered for long-term performance in all conditions—rain, grit, and everything in between.
• Ideal for riders who value precision and durability in every component.

For those chasing clean lines, crisp handling, and confidence in every turn, the Acros Headset Lower Cup is a small upgrade that makes a big difference on the road or trail.