Race Face X-type Fr dh Cup Set

These bottom bracket cups are designed to be used with Diabolus or Evolve DH crankset, but are also interchangeable with Shimano's XTR, XT and Saint BB cups, and are ideal for hardcore freeriders and downhill racers.
They are made from forged and CNC machined 7050 Aluminium.
They have more thread engagement and substantially thicker walls than the Atlas cups, giving greater durability in big-hit situations.
They also have double sealed cartridge bearings and larger ball bearings than internal systems, yielding vastly improved durability.