SRAM is pulling out all the stops with a new addition to their ever expanding list of parts. Their latest creation, the 2011 SRAM Red GXP Blackbox Ceramic Bottom Bracket.
While similar in design and look with that of the SRAM Force series bottom brackets, the GXP Blackbox uses ceramic balls made out of silicon nitride within the sealed cartridge bearings, putting quality over quantity. And it is because of the materials used in the bottom brackets that helps in reducing the drag that a bottom bracket experiences when the crank arm spindle passes through it.
Being fabricated by SRAM these bottom brackets will work well with any type of SRAM crank sets. The GPX in particular is equipped with alloy cups, which are anodized in Red and are available in two different kinds of threading, one in a 68 mm English threading and another in Italian with a 70mm threading. The SRAM GPX Blackbox Bottom Brackets are currently priced at $200.