Acros zs55-blocklock-steuersatz, icr

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Delivered between Tue, 27.5. and Wed, 11.6.

Product details

The zs55-blocklock headset from Acros is a semi-integrated headset specifically designed for Simplon bicycles with a head tube of 55 mm. This headset not only offers an effective steering stop function but also features an integrated cable routing system that prevents cables and lines from being overstressed during falls. The headset protects both the top tube and the down tube from contact with the handlebars and other components, increasing the durability of the frame. With a robust, double-sealed angular contact ball bearing made of stainless steel and optimized headset grease, the zs55-blocklock is designed for long-lasting functionality. The sealing washers with double-lip seals prevent moisture and dirt from entering, minimizing maintenance and extending the lifespan of the headset. This headset is an ideal choice for cyclists who value reliability and durability.

  • Integrated cable routing to prevent cable damage
  • Double-sealed angular contact ball bearing made of stainless steel
  • Optimized headset grease for long-lasting functionality
  • Sealing washers with double-lip seals to protect against dirt and moisture
  • Easy installation for long-term use without frequent maintenance.

Key specifications

Headset type
Thread
Item number
54447803

General information

Manufacturer
Acros
Category
Bike headsets
Manufacturer no.
310.02.561R1-AM
Release date
6.2.2025

Colour

Colour
Black
Exact colour description
Black

Material

Material group
Metal
Material
Stainless steel

Bike headset properties

Bearing shell type
Semi-Integrated (ZS)
Headset type
Thread
Fork shank diameter Top
1 1/8" (28.6mm)
Inside diameter head tube top
41mm (1") (EC/ZS)
Inner diameter head tube bottom
41mm (1") (EC/ZS)

Voluntary climate contribution

CO₂-Emission
Climate contribution

30-day right of returnReturn policy
24 Months Bring-in WarrantyWarranty provisions

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Reviews & Ratings

Warranty score

How often does a product of this brand in the «Bike headsets» category have a defect within the first 24 months?

Source: Digitec Galaxus
  • Acros
    Not enough data
  • 1.BBB
    0 %
  • 1.Cane Creek
    0 %
  • 1.PRO
    0 %
  • Ritchey
    Not enough data

Warranty case duration

How many working days on average does it take to process a warranty claim from when it arrives at the service centre until it’s back with the customer?

Source: Digitec Galaxus
  • Acros
    Not enough data
  • BBB
    Not enough data
  • Cane Creek
    Not enough data
  • PRO
    Not enough data
  • Ritchey
    Not enough data

Unfortunately, we don't have enough data for this category yet.

Return rate

How often is a product of this brand in the «Bike headsets» category returned?

Source: Digitec Galaxus
  • Acros
    Not enough data
  • 1.PRO
    2 %
  • 2.BBB
    3.2 %
  • 3.Cane Creek
    5.1 %
  • 4.Ritchey
    9.9 %
Source: Digitec Galaxus