Bottom bracket adapter, valid to install 24mm diameter cranks on any PF30 / BB30 bottom bracket (68mm wide and 30mm internal diameter box).
It reduces the internal diameter of the bearing from 30 to 24mm and increases the width of the bottom bracket up to 89mm. to be able to install cranks with 24mm thick axle (Shimano HollowTechII and FSA MegaExo).
Aluminum bottom bracket adapter, valid to install 24mm diameter cranks on any 30mm inner diameter and 68mm wide bottom bracket.
The easiest and most economical way to adapt your PF30 / BB30 bottom bracket for 24mm spindle cranks (Shimano HollowTechII and FSA MegaExo).
It avoids having to mount several spacers, washers, reducers, etc., saving weight, money, maintenance and possible noise and play.