Description Build your ultimate home track bike with this SRAM GXP bottom bracket. This bottom bracket is a threaded, external cup unit and includes left and right bottom bracket bearing cup set for use on some of the most sought-after cranks, such as SRAM Omniums and Miche Primato Advanced. . Features Works on Aventon Cordoba and Mataro frames Latest GutterSeal technology improves sealing while reducing drag. Includes left and right cups, plastic center seal/space shell with o-rings and BB spacers Specifications English Threaded BB Weight: 118g