CAMPAGNOLO Chorus cassette

Every sprocket tooth has been designed to achieve the maximum synchronization, shifting speed, and silent operation. The six larger sprockets have a double frame system for extreme torsional stiffness, so that operating precision is maintained even during shifting under stress. The surface treatment of the eleven steel sprockets assures longer component life, maintaining the maximum performance through time. The Athena™ groupset uses the Chorus™ sprockets. Features & Benefits: - ULTRA-SHIFT™ TEETH DESIGN: every sprocket tooth is designed and placed to perform a specific function, such as raising or lowering the chain or giving maximum power transmission to the wheel. - ULTRA-SHIFT™ SYNCHRONIZATION:sprocket tuning allows for maximum shifting performance without hesitation: fast, accurate, and quiet, even under stress. - REINFORCED MOUNTS FOR SECOND AND THIRD TRIPLETS: greater sprocket set rigidity - performance, precision. - NICKEL-CHROME SURFACE TREATMENT: reduces chain/sprocket friction - extends sprocket life Specifications: - Weight: 230 gr. Technologies: - Ultra-Shift™ System: QUICKLY TAKE THE LEAD AND LEAVE YOUR RIVALS MOTIONLESS.The Ultra-Shift™ control by Campagnolo® is regarded by everyone as the fastest and most precise.Thanks to the Ultra-Shift™ patented system; you can move the chain simultaneously up 3 sprockets and then 5 down.Furthermore, the lever design allows for an ever lighter shifting, whilst maintaining the ´click´ sound featured on all Campagnolo® controls. The Ultra-Shift™ system is featured on 2011 Super Record™, Record™ and Chorus™ 11 Speed groupset ranges.