MegaExo Quad BB, English - 68/73mm, BB-7550


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Replacement bottom bracket for Gravity Mega Exo Cranks with composite center sleeve and double o-ring seals.
• Spindle: 24mm • Shell: 68/73mm or 83mm • Mega Exo Quad BB Double row cartridge. • Composite center sleeve with double o-ring seals • External oversized cartridge bearings • Forged and CNC-machined external bearing cups • Finish - Anodized cups • English threading