Joined: Feb 2013
Posts: 1,472
Likes: 11
From: Near St. Louis, Missouri
Bikes: Giant Defy Advanced, Breezer Doppler Team, Schwinn Twinn Tandem, Windsor Tourist, 1954 JC Higgens
I saw a report, maybe on Friction Facts, that ceramic jockey wheels will save you about 10 seconds over the course of a century ride. I doubt that a ceramic BB would help very much more than that.