LOWER BEARING HEADSET CANE CREEK S52/30/H1 BAA0087

40.is52 cane creek conversion bottom. IS52/30/HI. Model: BAA0087. 40-Series Solutions: separate top and bottom headset cup assemblies for tapered, reducer and conversion applications (mix & match system helps reduce inventory overlap). Same features and materials as 40-series complete headsets. Technical description: IS52/30/H1. Bottom Head Tube Inside Diameter: 52.1mm. Crown Race Seat Diameter: 30,015mm. Crown Race Type: Steel, Face-Sealed. Bottom Stack Height: 1mm. Bottom Bearing Type: Black Oxide, Sealed.