Before the dizzying array of bottom bracket standards we see today, bottom bracket cups used to thread into precisely-manufactured frames and lasted darn near forever, seldom creaking. Thankfully, threaded BB's are still alive and well, and the Chris King ThreadFit 24mm bottom bracket is the perfect choice for those of us wanting superior quality and longevity. It's designed to accept 24mm spindles from a variety of manufacturers, provided you get the correct fit kit for your individual crankset.