SRAM GXP External Bottom Bracket

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The new GXP bearings feature Gutter Seal Technology drastically improving sealing against the elements while reducing seal drag. SRAM have designed a fresh cup forging for a high-e nd look. A new standard in external bearing performance. Available for various shell widths and thread standards. Suitable for 24mm spindle / 51mm chainline SRAM GXP interface cranks only. The box contains sealed cartridge bearings, threaded cups, center tube and spacers. Requires a 16 notch BB Installation tool. For best results, have your frame faced by a professional bicycle mechanic. MPN:68/73mm BSA (English) MTB/Road - 00.6415.045.00070mm (Italian) Road - 00.6415.001.00083mm BSA (English) MTB - 00.6415.045.060100mm BSA (English) Fat Bike - 00.6415.045.070 Show more