julio 25, 2026
Complete bottom bracket kit for the new Hollowgram SiSL2 Hollowgram. This kit is for a PressFit BB30 bottom bracket shell and includes all of the shims spacers and shields you will need to install the new Hollowgram. Ceramic bearings are used for a nice smooth rotation and feel. If you do not already have them the part number QC616 BB30 bearing Circlips are required