MegaExo 19 Cartridge Bottom Bracket

• MegaExo 19 Cartridge Bottom Bracket (Eng 68mm for Metropolis)
• Cartridge bearings
• Die-casted alloy and CNC machined external non-drive side cup
• Forged steel and CNC machined drive-side cup for better shifting mechanism support
• Composite center sleeve w/ double o-ring seals
• 108g

Note: Drive-side bearing not included