Niner's Biocentric 30 Bottom Bracket System August 20, 2015 Check out Niner's Biocentric 30 Bottom Bracket System for PF30 compatible frames and cranks. All the great features of the Biocentric II in a PF30 format. Niner's Biocentric 30 Bottom Bracket System from Niner Bikes on Vimeo. Tags: Bikes, Tips Share on Facebook Tweet Pin it Previous Post Next Post Leave a comment Name * Email * Comment * Categories American Classic Bikes BSB 9 BSB9 COMPETITONS CycloCross Review Technology Tips Training Wheels
