Campagnolo chorus 11 speed road cassette the additional speed led us to devising a new support structure for the last six sprockets in two subsets the form of the teeth is new and they have been treated to increase duration over time eleven sprockets that are even more efficient despite the reduction of the thicknesses we have succeeded the teeth have been designed to optimize the speed and fluidity of shifting this form reduces stress on the chain which ascends more easily onto the higher di