Acros

Headset Lower Cup - ZS56/40

The Acros Headset Lower Cup - ZS56/40 brings smooth, reliable steering performance to riders who demand precision and longevity from their cockpit setup. Designed for frames with a ZS56 lower head tube and compatible with 1.5" fork steerer tubes, this lower cup is built to handle serious trail use while maintaining tight, responsive handling.

Equipped with angular contact ball bearings, it delivers consistent load distribution and long-lasting smoothness, even under heavy braking and cornering forces. Whether it’s a rebuild, upgrade, or fine-tuned custom build, this lower headset cup provides the solid foundation every high-performance front end deserves.

• ZS56/40 fit – For frames with 56mm zero-stack lower head tubes and 1.5” fork steerers
• Angular contact bearings – Designed for strength, smoothness, and long service life
• Durable construction – Built to resist wear and contamination from tough trail conditions
• Precision alignment – Keeps steering responsive and predictable

Perfect for riders who value smooth steering and dependable performance, the Acros Headset Lower Cup ensures your front end stays dialed for the long ride ahead.