Campagnolo’s Chorus 11-Speed chain is designed and built for rapid and fluid shifting, even when under stress. It features an Ultra-Link fastening system and is 5.5 millimeters in width. The Campagnolo Chorus 11 Speed Chain is also designed to be quieter than ever, and features NI-PTFE anti-vibration treatment. The chain’s external links come in a special new steel. You can purchase the Campagnolo Chorus 11 Speed Chain at Wiggle for $56.27.