Reverse Base Semi-Integrated Upper Headset Cup ZS44/28.6

The Reverse Base ZS44/28.6 semi-integrated upper headset cup is the upper part of the headset bearing assembly, designed for frames with a semi-integrated seat. It includes the star nut for a 1 1/8-inch steerer tube and works with the lower cup to complete the headset bearing assembly. It is suitable for replacing the upper cup of your headset.

It has cartridge bearings with multiple seals for a long service life, even in difficult conditions. The outer diameter is 44 mm and the cup is made from 7075 aluminium, weighs 72 g and is black. Before ordering, check that size ZS44/28.6 matches your frame and fork.

Reverse Components was born in 2004 from Peter Schmid’s passion for mountain biking and is now based in Freudenstadt, in Germany’s Black Forest. It makes MTB components, from handlebars to pedals and wheels, and works with the EFBE laboratory to test them, bringing trail experience into product development.