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Replacement bearing kit for ZIPP 303s Hubs.
Note: Sold as a kit of 2 bearings only (choose the variant you need from the drop-down menu).
Specifications
ABEC 5 bearings
Grade 5 Chromium Steel Balls
In spec to 5/1,000,000″ (military grade)
52100 High Carbon Chromium Alloy Races
Mfr Claimed Weight
TBC