Hydraulic Optimised (HO) ensures that there is perfect compatibility with hydraulic components.Campagnolo's Chorus 11x HO rear derailleur offers all the performance of Record and Super Record rear derailleurs at a fraction of the cost, thanks to trickle-down technology and the utilisation of different materials. In this HO iteration, this Chorus rear derailleur has been optimised for use with disc brakes, offering a perfect chain line with frames that use a 142x12mm thru-axle. With an alloy body, a carbon outer shell, and jockey wheel cage, this 11x Chorus rear derailleur is both immensely durable, while weighing in at a relatively svelte 183g.Importantly, this Chorus 11x derailleur is equipped with Ultra shift technology, allowing the rider to move up to 5 sprockets with a single shift, making it perfect for any all-out performance Italian road bike. Designed with Embrace technology, this derailleur also ensures the chain can grip as many sprocket teeth as possible, for maximum power transfer out on the road.* Disc brake optimized design * Alloy body * Carbon fibre outer shell* Carbon fibre lower cage* 11-speed* Medium cage version compatible with 32 tooth cassettes* Weight: 183g (short cage version)