ZIPP Ceramic Bearing Upgrade Kit 61803 For Freehubs

This upgrade kit for the hubs of Zipp wheels includes two ceramic bearings of type 61803, which are compatible with numerous Zipp freehubs and a few front hubs. Ceramic balls made of silicon nitride, bearing races made of chrome-molybdenum-nickel steel, polyamide cages as well as non-contact seals ensure improved function, longer durability and lower friction.
Specifications:Dimensions (Inner x Outer x Width):17 mm x 26 mm x 5 mmDesignation:61803 (6803)Technical Information:Design:deep groove ball bearingsRecommended Use:hubsInner Race Material:stainless steel (chrome-molybdenum-nickel)Outer Race Material:stainless steel (chrome-molybdenum-nickel)Ball Material:Ceramic (Si3N4)Compatibility:Cognition front hubs76 front hubs77 front hubsCognition Gen2 freehubsCognition Disc freehubsCognition Disc V2 freehubsZR1 freehubsZR1 Disc freehubsZM2 freehubs176 freehubs176 Disc freehubs177 freehubs177 Disc freehubsFeatures:ideal upgrade for Zipp wheels or hubs, reduces friction and breakaway torquesilicon nitride ceramic ball bearings for higher durabilitycorrosion-resistant bearing races made of a hardened stainless steel super-alloy on a chrome-molybdenum-nickel basispolyamide ball bearing cages for vibration damping and insulation, improved function and durabilitycontact-free seals possible thanks to high strengthmanufactured in Germany by a medical device specialistNote from the manufacturer:To upgrade a whole wheelset you need three kits (six bearings): two kits (4 pieces) with 61903 bearings for the front and rear hub shells and one kit (two bearings) with 61803 bearings for the freehub body.
Manufacturer Number:11.2018.067.001
Contents:Zipp Upgrade Kit, consisting of:
2 x 61803 ceramic bearings (17 mm x 26 mm x 5 mm)