Originally Posted by Sincitycycler

Skeptical if ceramic bottom brackets work?

Try this simple test. Take off your chain or move it from the chainrings and let it rest on the bottom bracket shell of your frame. Now, with no resistance from your chain, spin your crank backwards as fast as you can. A typical Shimano 10 speed crank will spin 3-5 times and then stop. When using our ceramic bottom bracket, the crank spins 17, 18, 19 times or more! Imagine how much energy you save and how much power goes to pushing you forward and not overcoming extra resistance from your bb.