Description • Mega Exo Cartridge Sealed MTB Bottom Bracket Die Cast then CNC machined alloy bearing cups Composite DI2 compatible adjustable center sleeve • Type: Bottom brackets • Manufacturer: FSA • Discipline: MTB • Material: Alloy • Weight: 50 grams • Frame Dimension: BSA • Compatibility: Mega Exo 24mm MegaExo bottom bracket for use MTB NBD MegaExo cranksets