Campagnolo's 11-Speed Chorus chain is designed for fluidity smoothness and noise reduction. Its Ultra-Narrow 5.5mm width design fully meets the quality and performance standards of 11-speed and is therefore suitable for use with any Campagnolo 11=speed groupset. Its Ultra-Link connectors provide maximum performance to Campagnolo transmissions. The enhanced efficiency and advanced anti-friction treatment of this chain will mean a longer life for your chainrings and sprockets. Technical Specifications: Suitable for any Campagnolo 11-speed Groupset 114 Links 5.5mm wide Ultra Link System for top-level fluidity high strength chain connection greater safety and longer chain life Silver colour External links constructed from a special new steel Advanced Nickel-PTFE anti-friction treatment for reduced friction smooth pedalling quiet operation greater efficiency and longer chain life Requires the Campagnolo Ultralink UT-CN300 Chain Tool for installation Weight: 242g based on 108 links / 2.24g per link