#57 INTERNAL ZS44 / ZS56
For tapered steerer (can be converted to 1 1/8 steerer through purchase of a FS160-5538 crown race)
To fit the new style tapered headtubes with a 55.95mm zero stack lower insertion and a 44.0mm zerostack top fitting.
– 44.0 top insertion
– 55.95 lower insertion
With headsets please call our sales team if you have any questions about what is the right headset for your frame / fork.
FSA Part Number 121-0501
Not sure if this is the one you need?
Check out the handy FSA Headset ID Tool here http://www.fsaeasyheadset.com/