Race Face DH-Freeride Massive external bottom bracket cups house 35 larger ball bearings than internal systems yielding vastly improved durability 100mm Bearings feature a special full complement construction This doubles the amount of ball bearings in the cartridge and greatly increases its load carrying capacity Bearings are factory filled with Phil Wood waterproof grease  tested and proven to extend bearing life Bearings feature Race Faces custom triple wiper seal to better retain grease and keep contaminants out Features 35 more thread engagement and thicker walls than the XC AM BB cups for greater durability in big hit situations