ZIPP ZR1 SL 61803/61903 Steel Bearing (x2) #11.2028.069.000

The ZIPP ZR1 SL 61803/61903 bearing kit is the official service kit designed for maintaining ZR1 SL hubs—the lightweight version of the ZR1 hub fitted to ZIPP's high-end NSW wheels. It combines two steel bearing sizes to support all load points in both front and rear hubs.

This kit replaces bearings that have developed play or lost their smoothness after multiple seasons of intensive use, restoring original rolling performance. Installation requires the appropriate press tool for ZIPP hubs.