White Industries ZS/EC Headset

This hybrid configuration is specifically designed to let you run a modern tapered fork (1-1/8" to 1-1/2") on a frame with a standard 44mm straight head tube. The zero-stack (ZS) upper keeps the front end low, while the external cup (EC) lower provides the necessary clearance for the larger tapered steerer tube.

You will still need a standard headset press to install the cups into your frame. However, the included split crown race is designed to slide onto your fork steerer by hand, eliminating the need for a specialized crown race setting tool.

Yes, the headset is designed for long-term serviceability. The bearings are easily accessible and replaceable, so you can maintain smooth steering performance for years without needing to replace the entire unit.

This headset uses a ZS44/28.6 upper assembly and an EC44/40 lower assembly. It is compatible with 44mm head tubes and tapered 1-1/8" to 1-1/2" steerer tubes.

The upper assembly has a stack height of 8mm, and the lower assembly adds 12mm. This is a relatively low-profile design, but you should account for these measurements when calculating your total handlebar height.