Designed to fit into a zero stack (44mm ID) head tube, but allow the use of a tapered steer fork.
- ACB with Forged alloy upper cup
- ACB with Forged alloy lower cup
- Stainless steel crown race
- FSA Part Number 101-1321A
Not sure if this is the one you need?
Check out the handy FSA Headset ID Tool here http://www.fsaeasyheadset.com/