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ACROS AZ-55 Headset Lower Part 1.5 Inches Press Fit ZS55/40

ACROS AZ-55 Headset Lower Part 1.5 Inches Press Fit ZS55/40

To maximize the compatibility with different fork steerers, bikes and frames, the upper and lower parts of ACROS headsets are being offered separately in a great variety of dimensions.

The semi-integrated ACROS AZ-55 Headset Lower Part features the newest seal technologies from ACROS and high-end bearings in stainless quality for tapered forks and frames with a 55mm inner diameter headtube.

Precisely manufactured angular contact bearings made of stainless steel form the heart of the AZ-55 and offer play-free and smooth steering characteristics for a long time.

VULCANIZED SEALING
A sturdy vulcanized seal bonded to the compression ring and the base plate as an additional and first barrier against water and dirt.

V-LIP
In addition to the new vulcanized seal on the compression ring and the base plate, the sealing discs of the bearings now have a special v-groove double split lip (V-LIP). Furthermore, the V-LIP is recessed in a fine polished groove, which significantly increases the sealing effect once again.

The name ACROS AZ-55 describes the semi integrated (also known as press fit or zero stack) Ahead headset for tapered forks and frames with a 55mm inner diameter headtube. The S.H.I.S. denotation (see attachment) for the lower part offered here is ZS55/40 (with the 1.5" crown race).
Construction type (Ahead/Thread): Ahead
Cup skirt length in mm: 9
Included in delivery: 1x lower part of the headset, 1x 1.5" crown race
Material: Aluminium ||| Stainless Steel
Weight supplement: manufacturer information

Fact Sheet of ACROS AZ-55 Headset Lower Part 1.5 Inches Press Fit ZS55/40

Product Name: ACROS AZ-55 Headset Lower Part 1.5 Inches Press Fit ZS55/40
Manufacturer: ACROS
Item Code: ACR437272
activity: Cycling
usage bikesport: MTB
Steerer tube Ø: 1 1/8"-1 1/4" tapered, 1 1/8"-1 1/2" tapered, 1 1/8"-1 3/8" tapered, 1 1/4"-1 1/2" tapered, 1 1/2" straight (1.5)
S.H.I.S.: semi-integrated (ZS)
S.H.I.S. bottom: ZS55 / 40
headset version: Lower part
headset stack height: 2.8mm
Model year: 2022
Color: Black, Red, Blue
weight: 81g