Hardly any other component is more hidden but nevertheless important than the Headset. More than 15 years of know-how in bearing technology are directly reflected in our products. The result are high-end headsets with the right spark of glamour and elegance.The combination of stainless steel angular contact ball bearings and sophisticated sealings ensure durability with minimal maintenance and therefore more worry-free time in the saddle. Simple assembly and exchangeability are main features of this type and because of the wide variety available it is very important to measure accurately.Replacement headset bearings for frames with fully integrated headset (IS) with bearing seats of 44mm at the top and 52mm at the bottom of the head tube. The two bearings (44x35x5,5-36°/36° and 52x40x7-45°/45°) are used, among others, by the bicycle manufacturer Canyon in the Grizle model. The is44/is52 bearing set consists of two stainless steel angular contact ball bearings and a matching compression ring with integrated sealing for optimal protection of the upper headset bearing against moisture and dirt.Key Features• Replacement bearing set for integrated headest (44mm upper, 52mm lower)• For use on the Canyon Grizle, amongst others• Supplied with compatible compression ring