The teeth of the Record sprocket set have an Ultra Drive design that integrates the chain and chain wheels of the crankset to ensure fast, precise and consistent shifting through the years. Racers and enthusiasts are always looking to reduce weight without sacrificing performance. One way Campagnolo has done this is by replacing the steel-and-sprocket set with an all-titanium one. Only 11t models include a lockring. RECORD sprockets UD 10 speed titanium 11-23-156g,