Two-piece external cup conversion BB that allows for using Shimano Hollowtech 24mm spindle cranks in BB30 Road bike frames. BB30 - 68mm Width Road x 42mm Diameter
24mm Shimano Hollowtech Road Cranks only.
This Shimano BB30/PF30 BB requires two 16 notch traditional BB tools along with a press tool/drift for installation.
Use any standard outboard cup BB tool with 16 external notches and a 44mm ID
