Did you know that you could shop on our www.chainreactioncycles.com/us/en website?

    • Acros AZ56 Headset Upper Int Cable Routing

  • Acros ZS56 Headset Upper Integrated Cable Routing

    Keeping your cables hidden while also giving you a hassle-free, clean finish, this semi-integrated headset upper (ZS56) is developed specifically for bike frames with a 56mm head tube at the top and integrated cable routing (ICR). It can also only be used in combination with a matching headset cover (ZS56 headset cover) for integrated cable routing. The headset upper part includes a ZS56 bearing cup, a matching angular contact ball bearing and a special compression ring for ICR. Another highlight is it comes complete with Acros's internal protection sealing (IPS) for an additional layer of protection for the headset bearings against moisture and dirt.

    Designed for Integrated Cable Routing

    The zs56 upper part of this headset with ICR is the result of long development work so that you can easily install it and have a long rest. This is ensured by a double-sealed angular contact ball bearing that Acros fill with its optimised headset grease. Thanks to the two sealing disks with double lip seals, the grease is securely held inside the industrial ball bearing and moisture and dirt cannot penetrate the bearing.

    High-Quality Angular Contact Ball Bearings

    Acros use special angular contact ball bearings in its aftermarket headsets. They can cope with the radial and axial forces occurring on the head tube particularly well and therefore contribute to the long service life of the headset.

    Sophisticated Sealing Technology

    A number of seals effectively keep moisture and dirt away from the heart of this headset and its angular contact ball bearings. This means less maintenance as well as increased longevity on your travels.


    • Bearing Diameter Upper Part (ID): 56mm
    • Steerer Tube (SD): 28.6mm / 1 1/8"
    • Bearing Dimensions: 52x42x7
    • Storage Height: 7mm
    • Bearing Bevel: 45 degrees/ 45 degrees
    • Headset Cover Included: No, Acros ZS56 headset cover is available separately
    • Double-sealed angular contact ball bearings
    • Centering ring made of glass fibre reinforced plastic
    • Metal reinforced sealing washer
    • Weight: 35g


    • Does the zs56 upper part for integrated cable routing (icr) fit into my bike? This storage set with integrated cable routing only fits into your bike if this was already provided for by the manufacturer at the factory. In addition, the upper head tube diameter must be 56mm.
    • What is included in the scope of delivery of the zs56 upper part for integrated cable routing (icr)?: 1x 52x42x7 headset bearing pressed into bearing shell (ID: 56mm), 1x centering ring and 1x metal reinforced seal.

    Buy Acros Components from Chain Reaction Cycles, the World's Largest Online Bike Store.


    • Colour: Black
    • Steerer Diameter: 1.1/8"
    • Headset Type: Semi-Integrated



  • Save 17%
    RRP C$85.99
    C$71.49 71.49
    Select Colour
    Select Steerer Diameter
    Email me when in stock

    Order in the next


    and choose Next Day Delivery at the checkout

  • Need help? Have a question?

    Get in contact with us

    Headsets Buying Guide

    We’ve got everything you need to know in our buying guide...

  • Also Consider

    Select Option

    Please select an option

    Select Option

    Please select an option

    Select Option

    Please select an option

    Select Option

    Please select an option