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ZS44/ZS56 Headset Top Fork Expander, Aluminium Alloy Bike Headset, Bike Headset Cup Tube for Mountain Road

4.6 (1) Write Review
Free shipping on orders over $29.99

$23.09

$ 10 .99 $10.99

In Stock
  • ALUMINUM ALLOY MATERIAL: The bike headset cup tube uses aluminum alloy material with weather-resistant properties, maintaining structural integrity through various riding conditions
  • ACCURATELY-MACHINED COMPONENTS: The headset top fork expander features accurately milled components that maintain consistent steering response over extended use periods
  • DIRECT REPLACEMENT: The bike headset offers direct 1 threadless replacement without frame modifications. Simplified design enables quick installation using existing hardware
  • STEERING ACCURACY: Headset bearings maintain proper handlebar alignment for improved control across pavement, gravel, and uneven terrain types
  • UNIVERSAL COMPATIBILITY: The bike fork replacement system works with standard headset dimensions, providing an exact match for common bicycle configurations


Item type: Bike Headset

Condition: brand new

Material: aluminium alloy

Weight: Approx. 136g

Color: As picture shown

ZTTO 4456ST Bicycle Headset

ZTTO code: Upper cup/Bearing outside diameter+ Lower cup/Bearing outside diameter + Fork tube

("44" for OD ø44,"56" for OD ø56,"S"for Straight Tube ,"T" for Tapered Tube fork)


Package List：

1 x Bike Headset


Jessica J.
Reviewed in the United States on May 13, 2025
I received a headset branded as ZTTO. I plan to upgrade my suspension fork to a tapered fork and needed a new headset to replace the caged stock bearings. After researching the correct size of my head tube, I found the correct size headset with this one.I measured the cups outer diameters and they fall within the specs listed. This set even comes with the 1 1/8” adapter to fit a straight tube fork with the included crown race. Also included is a star nut which is a major plus. Now I have everything I need when I select a new air fork.The only negative I can think of is the lack of specs on the bearings. If I were to ever need to replace them I will have to measure them and match them with the same size bearings. The cups themselves are branded and labeled with the correct cup type and size.