Campagnolo Chorus Ultra-Link 11 Speed Chain The 11 speed chain has been designed for shifting more rapidly and fluidly even under stress, and to be more resistant than the 10 speed one. Silence, Action. The new Chorus 11 speed chain is quieter than ever. The new 5.5 millimetre thickness has been combined with the new materials and a special anti-vibration treatment which permits outstanding fludity. It is necessary to use the new UT-CN300 tool to fit it.