The "BB" which is formally known as the Bottom Bracket is the heart of a bicycle. The BB is centrally located on all bicycle frames and are pushed to it's limits as the crankset is the most essential part of moving the bicycle to reach its destination. While frame & crankset manufacturers around the world have created an endless variety of standard which is creating a vast confusion to end consumers from standard threaded type BBs to press fit designs with different widths and sizes.
