FSA No. Series Headset

The No. 10 is designed for frames with a 1-1/8" head tube that uses a Zero Stack (ZS) standard, where the bearing cups press into the frame. You should verify your frame's head tube inner diameter and stack height requirements before purchasing to ensure compatibility.

The No. 8b is an integrated headset designed for the Cane Creek standard, meaning the bearings drop directly into the frame's head tube. The No. 10 is a Zero Stack model, which requires pressing external cups into the frame to house the bearings.

No, the FSA No. Series models listed here are specifically designed for 1-1/8" straight steerer tubes. They will not fit frames or forks requiring a tapered steerer setup.

Yes, all FSA No. Series headsets include the necessary crown race that presses onto your fork's steerer tube to interface with the bottom bearing.

These models utilize caged ball bearings. While they are durable and reliable, they are generally not designed to be disassembled for service in the same way high-end sealed cartridge bearings are; they are typically replaced as a unit if they become worn or gritty.