SRAM Red GXP Bottom Bracket is built with Hybrid Ceramic bearings. 10% lighter than standard bearings, they require 78% less energy than other BB sets. Smooth and resistance free for greater speed. Isn't that what it's all about?

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Specifications:

Material -- Ceramic Balls/Stainless Steel Races

Compatibility -- SRAM and Truvativ, Giga X Pipe GXP cranksets

Availabe -- English and Italian threading

Weight -- 105gms