Symbolic picture: Details of the pictured headset may differ slightly in appearance.
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 integrated ACROS Ai-41 Headset Upper Part features the newest labyrinth seal technologies from ACROS and high-end bearings in stainless quality.
Precisely manufactured angular contact bearings made of stainless steel form the heart of the Ai-41 and offer play-free and smooth steering characteristics for a long time.
The right sealing technology is equally important as the highest quality bearings when it comes to high-end components.
New for the year 2017 is a sturdy vulcanized seal bonded to the compression ring and the base plate as an additional and first barrier against water and dirt.
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 Ai-41 describes the integrated (also known as drop in) 1 1/8" Ahead headset for frames with a 41 mm headtube. The S.H.I.S. denotation (see attachment) of the upper part offered here is IS41/28,6.
Construction type (Ahead/Thread): Ahead
Material: top cover: aluminium
bearing: stainless steel
Weight supplement: manufacturer information