Armstrong's aluminum T.A. cogset had a 21-22-23 on top. Even with a sparking clean chain and cogs in the morning, they still pick up this much grime during a seven-hour stage in perfect weather conditions.
Lance's climbing bike is tuned everywhere to eliminate excess weight. The large cylindrical-head titanium caliper pivot bolt replaced the standard domed-head pivot bolt. Bolts everywhere on the bike have been changed to minimize weight.