FSA MegaExo BB-7100/Di-2 BSA 68/73 mm

The MegaExo bottom bracket works with NBD (No Pinch Bolt Design) MegaExo 24mm cranks.

"MegaExo Bottom Brackets are designed to work with the 24 mm spindle cranksets, and feature die-cast and machined aluminum cups which house chrome steel hybrid cartridge bearings. This MegaExo bottom bracket is equipped with a variable center sleever to fit 68/73 mm bottom bracket shells. Di2 compatible.

NBD (No Pinch Bolt Design) - FSA No Pinch Bolt cranks are equipped with a threaded spindle to mount the left arm directly."

Manufacturer's website: FSA MegaExo BB-7100/Di-2