Team DH X-Type:~ Manufactured from high strength aluminum and featuring twice the number of ball bearings than competitors. Race Face BB cups are also compatible with some Shimano and FSA external BB systems. BB Cups are forged and CNC machined from 7050 aluminum. Features 35% more thread engagement and thicker walls than the XC/AM BB cups for greater durability in big-hit situations. Massive external bottom bracket cups house 35% larger ball bearings than internal systems, yielding vastly improved durability. 115g.