Full Speed Ahead NO.55R/57-A Headset

Yes, this headset is specifically designed for 1-1/8 inch to 1-1/2 inch tapered steerer tubes, making it a direct fit for most modern mountain and road bikes using that standard.

ZS56 refers to a Zero Stack headset with a 56mm inner diameter head tube. Before purchasing, verify that your frame's head tube is compatible with this specific press-fit standard to ensure a proper, secure installation.

Angular contact bearings are engineered to handle both radial and axial loads simultaneously. This design provides a smoother, more consistent steering feel and better durability compared to standard cartridge bearings, especially when under the stress of rough terrain.

The sealed design significantly reduces the need for frequent maintenance by protecting the internal bearings from dirt, water, and debris. While it is highly resistant to the elements, it is still good practice to inspect and clean the assembly during your annual bike service.

No, this headset is optimized specifically for tapered steerer tubes. It will not accommodate a straight 1-1/8 inch steerer fork without the use of a specific adapter, which is not included.